DTD Tree structure of MARC mrcbxmlfile DTD generated using Matra 0.8b

DTD Name: MARC Bibliographic/Holdings/Community Information Record XML DTD
DTD Location: ftp://ftp.loc.gov/pub/marcdtd/mrcbxmlfile.dtd [cached copy]
DTD Version: May 5, 2004

DTD-Tree [How to read it?]

mrcbfile
|
+- mrcb+ (format-type)
   |
   |- mrcbldr-bd
   |  |
   |  |= mrcbldr-bd-05 (name=="Record Status", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-06 (name=="Type of record", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-07 (name=="Bibliographic level", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-08 (name=="Type of control", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-09 (name=="Character coding scheme", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-17 (name=="Encoding level", obsolete=="no", value)
   |  |
   |  |= mrcbldr-bd-18 (name=="Descriptive cataloging form", obsolete=="no", value)
   |  |
   |  += mrcbldr-bd-19 (name=="Linked record requirement", obsolete=="no", value)
   |
   |- mrcbldr-hd
   |  |
   |  |= mrcbldr-hd-05 (name=="Record Status", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-06 (name=="Type of record", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-07 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-08 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-09 (name=="Character coding scheme", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-17 (name=="Encoding level", obsolete=="no", value)
   |  |
   |  |= mrcbldr-hd-18 (name=="Item information in record", obsolete=="no", value)
   |  |
   |  += mrcbldr-hd-19 (name=="Undefined", obsolete=="no", value)
   |
   |- mrcbldr-ci
   |  |
   |  |= mrcbldr-ci-05 (name=="Record Status", obsolete=="no", value)
   |  |
   |  |= mrcbldr-ci-06 (name=="Type of record", obsolete=="no", value="q")
   |  |
   |  |= mrcbldr-ci-07 (name=="Kind of data", obsolete=="no", value)
   |  |
   |  |= mrcbldr-ci-08 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |= mrcbldr-ci-09 (name=="Character coding scheme", obsolete=="no", value)
   |  |
   |  |= mrcbldr-ci-17 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |= mrcbldr-ci-18 (name=="Undefined", obsolete=="no", value)
   |  |
   |  += mrcbldr-ci-19 (name=="Undefined", obsolete=="no", value)
   |
   |- mrcb-control-fields?
   |  |
   |  |- mrcb001
   |  |
   |  |- mrcb003
   |  |
   |  |- mrcb004?
   |  |
   |  |- mrcb005
   |  |
   |  |- mrcb006-bk (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS--BOOKS")
   |  |  |
   |  |  |= mrcb006-bk-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-01-04 (name=="Illustrations", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-05 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-06 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-07-10 (name=="Nature of contents", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-11 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-12 (name=="Conference publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-13 (name=="Festschrift", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-14 (name=="Index", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-bk-15 (name=="Undefined", obsolete=="no", value="fill")
   |  |  |
   |  |  |= mrcb006-bk-16 (name=="Literary form", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-bk-17 (name=="Biography", obsolete=="no", value)
   |  |
   |  |- mrcb006-cf (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS--COMPUTER FILES/ELECTRONIC RESOURCES")
   |  |  |
   |  |  |= mrcb006-cf-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-cf-01-04 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-cf-05 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-cf-06-08 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-cf-09 (name=="Type of computer file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-cf-10 (name=="Undefined", obsolete=="no", value="fill")
   |  |  |
   |  |  |= mrcb006-cf-11 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-cf-12-17 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |- mrcb006-mp (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL

CHARACTERISTICS--MAPS")
   |  |  |
   |  |  |= mrcb006-mp-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-01-04 (name=="Relief", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-05-06 (name=="Projection", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-07 (name=="Prime meridian", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb006-mp-08 (name=="Type of cartographic material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-09-10 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-11 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-12 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-13 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-14 (name=="Index", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mp-15 (name=="Undefined", obsolete=="no", value="fill")
   |  |  |
   |  |  += mrcb006-mp-16-17 (name=="Special format characteristics", obsolete=="no", value)
   |  |
   |  |- mrcb006-mu (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL

CHARACTERISTICS--MUSIC")
   |  |  |
   |  |  |= mrcb006-mu-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-01-02 (name=="Form of composition", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-03 (name=="Format of music", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-04 (name=="Music parts", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-05 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-06 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-07-12 (name=="Accompanying matter", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-13-14 (name=="Literary text for sound recordings", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-15 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mu-16 (name=="Transposition and arrangement", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-mu-17 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |- mrcb006-se (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS--CONTINUING RESOURCES")
   |  |  |
   |  |  |= mrcb006-se-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-01 (name=="Frequency", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-02 (name=="Regularity", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-03 (name=="ISSN center", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb006-se-04 (name=="Type of continuing resource", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-05 (name=="Form of original item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-06 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-07 (name=="Nature of entire work", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-08-10 (name=="Nature of contents", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-11 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-12 (name=="Conference publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-13-15 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-se-16 (name=="Original alphabet or script of title", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-se-17 (name=="Entry convention", obsolete=="no", value)
   |  |
   |  |- mrcb006-vm (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL

CHARACTERISTICS--VISUAL

MATERIALS")
   |  |  |
   |  |  |= mrcb006-vm-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-01-03 (name=="Running time for motion pictures and videorecordings", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-04 (name=="Undefined", obsolete=="no", value="fill")
   |  |  |
   |  |  |= mrcb006-vm-05 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-06-10 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-11 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-12 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-13-15 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-vm-16 (name=="Type of visual material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-vm-17 (name=="Technique", obsolete=="no", value)
   |  |
   |  |- mrcb006-mx (name=="FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL

CHARACTERISTICS--MIXED MATERIALS")
   |  |  |
   |  |  |= mrcb006-mx-00 (name=="Form of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mx-01-05 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb006-mx-06 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  += mrcb006-mx-07-17 (name=="Undefined", obsolete=="no", value)
   |  |
   |  |- mrcb007-a* (name=="PHYSICAL DESCRIPTION FIXED FIELD--MAP", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-a-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-a-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-a-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-a-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-a-04 (name=="Physical medium", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-a-05 (name=="Type of reproduction", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-a-06 (name=="Production/reproduction details", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-a-07 (name=="Positive/negative aspect", obsolete=="no", value)
   |  |
   |  |- mrcb007-c* (name=="PHYSICAL DESCRIPTION FIXED FIELD--ELECTRONIC RESOURCE", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-c-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-c-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-04 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-05 (name=="Sound", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-06-08 (name=="Image bit depth", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-09 (name=="File formats", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-10 (name=="Quality assurance target(s)", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-11 (name=="Antecedent/Source", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-c-12 (name=="Level of compression", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-c-13 (name=="Reformatting quality", obsolete=="no", value)
   |  |
   |  |- mrcb007-d* (name=="PHYSICAL DESCRIPTION FIXED FIELD--GLOBE", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-d-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-d-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-d-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-d-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-d-04 (name=="Physical medium", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-d-05 (name=="Type of reproduction", obsolete=="no", value)
   |  |
   |  |- mrcb007-e* (name=="PHYSICAL DESCRIPTION FIXED FIELD--DISABLED ACCESS", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-e-00 (name=="Category", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-01 (name=="Stairway ramps", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-02 (name=="Doors", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-03 (name=="Furniture, equipment, display racks", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-04 (name=="Restrooms", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-05 (name=="Elevators", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-06 (name=="Telephones", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-07 (name=="Flashing emergency lights", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-08 (name=="Sign language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-e-09 (name=="Subtitles and/or supertitles", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-e-10 (name=="Parking", obsolete=="no", value)
   |  |
   |  |- mrcb007-f* (name=="PHYSICAL DESCRIPTION FIXED FIELD--TACTILE MATERIAL", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-f-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-02 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-03 (name=="Class of braille writing, code 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-04 (name=="Class of braille writing, code 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-05 (name=="Level of contraction", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-06 (name=="Braille music format, code 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-07 (name=="Braille music format, code 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-f-08 (name=="Braille music format, code 3", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-f-09 (name=="Special physical characteristics", obsolete=="no", value)
   |  |
   |  |- mrcb007-g* (name=="PHYSICAL DESCRIPTION FIXED FIELD--PROJECTED GRAPHIC", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-g-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-g-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-04 (name=="Base of emulsion", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-05 (name=="Sound on medium or separate", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-06 (name=="Medium for sound", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-g-07 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-g-08 (name=="Secondary support material", obsolete=="no", value)
   |  |
   |  |- mrcb007-h* (name=="PHYSICAL DESCRIPTION FIXED FIELD--MICROFORM", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-h-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-h-03 (name=="Positive/negative aspect", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-04 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-05 (name=="Reduction ratio range", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-06-08 (name=="Reduction ratio", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-09 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-10 (name=="Emulsion on film", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-h-11 (name=="Generation", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-h-12 (name=="Base of film", obsolete=="no", value)
   |  |
   |  |- mrcb007-k* (name=="PHYSICAL DESCRIPTION FIXED FIELD--NONPROJECTED GRAPHIC", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-k-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-k-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-k-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-k-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-k-04 (name=="Primary support material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-k-05 (name=="Secondary support material", obsolete=="no", value)
   |  |
   |  |- mrcb007-m* (name=="PHYSICAL DESCRIPTION FIXED FIELD--MOTION PICTURE", repeatable=="yes")
   |  |  |
   |  |  |- mrcb007-m-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |- mrcb007-m-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-04 (name=="Motion picture presentation format", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-05 (name=="Sound on medium or separate", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-06 (name=="Medium for sound", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-07 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-08 (name=="Configuration of playback channels", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-09 (name=="Production elements", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-10 (name=="Positive/negative aspect", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-11 (name=="Generation", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-12 (name=="Base of film", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-13 (name=="Refined categories of color", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-14 (name=="Kind of color stock or print", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-15 (name=="Deterioration stage", obsolete=="no", value)
   |  |  |
   |  |  |- mrcb007-m-16 (name=="Completeness", obsolete=="no", value)
   |  |  |
   |  |  +- mrcb007-m-17-22 (name=="Film inspection date", obsolete=="no", value)
   |  |
   |  |- mrcb007-o* (name=="PHYSICAL DESCRIPTION FIXED FIELD--KIT", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-o-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-o-01 (name=="Specific material designation", obsolete=="no", value)
   |  |
   |  |- mrcb007-q* (name=="PHYSICAL DESCRIPTION FIXED FIELD--NOTATED MUSIC", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-q-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-q-01 (name=="Specific material designation", obsolete=="no", value)
   |  |
   |  |- mrcb007-r* (name=="PHYSICAL DESCRIPTION FIXED FIELD--REMOTE SENSING IMAGE", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-r-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-02 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-03 (name=="Altitude of sensor", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-04 (name=="Attitude of sensor", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-05 (name=="Cloud cover", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-06 (name=="Platform construction type", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-07 (name=="Platform use category", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-r-08 (name=="Sensor type", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-r-09-10 (name=="Data type", obsolete=="no", value)
   |  |
   |  |- mrcb007-s* (name=="PHYSICAL DESCRIPTION FIXED FIELD--SOUND RECORDING", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-s-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-s-03 (name=="Speed", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-04 (name=="Configuration of playback channels", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-05 (name=="Groove width/groove pitch", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-06 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-07 (name=="Tape width", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-08 (name=="Tape configuration", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-09 (name=="Kind of disc, cylinder or tape", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-10 (name=="Kind of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-11 (name=="Kind of cutting", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-s-12 (name=="Special playback characteristics", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-s-13 (name=="Capture and storage technique", obsolete=="no", value)
   |  |
   |  |- mrcb007-t* (name=="PHYSICAL DESCRIPTION FIXED FIELD--TEXT", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-t-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-t-01 (name=="Specific material designation", obsolete=="no", value)
   |  |
   |  |- mrcb007-v* (name=="PHYSICAL DESCRIPTION FIXED FIELD--VIDEORECORDING", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-v-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-01 (name=="Specific material designation", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-02 (name=="Original versus reproduction aspect", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb007-v-03 (name=="Color", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-04 (name=="Videorecording format", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-05 (name=="Sound on medium or separate", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-06 (name=="Medium for sound", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb007-v-07 (name=="Dimensions", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-v-08 (name=="Configuration of playback channels", obsolete=="no", value)
   |  |
   |  |- mrcb007-z* (name=="PHYSICAL DESCRIPTION FIXED FIELD--UNSPECIFIED", repeatable=="yes")
   |  |  |
   |  |  |= mrcb007-z-00 (name=="Category of material", obsolete=="no", value)
   |  |  |
   |  |  += mrcb007-z-01 (name=="Specific material designation", obsolete=="no", value)
   |  |
   |  |- mrcb008-ci (name=="FIXED-LENGTH DATA ELEMENTS--COMMUNITY INFORMATION")
   |  |  |
   |  |  |= mrcb008-ci-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-06 (name=="Volunteer opportunities", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-07 (name=="Volunteers provided", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-08 (name=="Child care arrangements", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-09 (name=="Speakers bureau", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-10 (name=="Mutual support groups", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-ci-11 (name=="Meeting rooms and facilities available", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-ci-12-14 (name=="Language", obsolete=="no", value)
   |  |
   |  |- mrcb008-hd (name=="FIXED-LENGTH DATA ELEMENTS--HOLDINGS")
   |  |  |
   |  |  |= mrcb008-hd-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-06 (name=="Receipt or acquisition status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-07 (name=="Method of acquisition", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-08-11 (name=="Expected acquisition end date", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-12 (name=="General retention policy", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-13 (name=="Specific retention policy: Policy type", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-14 (name=="Specific retention policy: Number of units", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-15 (name=="Specific retention policy: Unit type", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-16 (name=="Completeness", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-17-19 (name=="Number of copies reported", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-20 (name=="Lending policy", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-21 (name=="Reproduction policy", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-22-24 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-hd-25 (name=="Separate or composite copy report", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-hd-26-31 (name=="Date of report", obsolete=="no", value)
   |  |
   |  |- mrcb008-bk (name=="FIXED-LENGTH DATA ELEMENTS--BOOKS")
   |  |  |
   |  |  |= mrcb008-bk-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-18-21 (name=="Illustrations", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-22 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-23 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-24-27 (name=="Nature of contents", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-28 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-29 (name=="Conference publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-30 (name=="Festschrift", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-31 (name=="Index", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-32 (name=="Main entry in body of entry", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-bk-33 (name=="Literary form", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-34 (name=="Biography", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-bk-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-bk-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  |- mrcb008-cf (name=="FIXED-LENGTH DATA ELEMENTS--COMPUTER FILES")
   |  |  |
   |  |  |= mrcb008-cf-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-18-21 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-22 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-23-25 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-26 (name=="Type of computer file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-27 (name=="Type of machine", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-cf-28 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-29-34 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-cf-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-cf-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  |- mrcb008-mp (name=="FIXED-LENGTH DATA ELEMENTS--MAPS")
   |  |  |
   |  |  |= mrcb008-mp-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-18-21 (name=="Relief", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-22-23 (name=="Projection", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-24 (name=="Prime meridian", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-mp-25 (name=="Type of cartographic material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-26-27 (name=="Publisher code", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-mp-28 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-29 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-30 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-31 (name=="Index", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-32 (name=="Citation indicator", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-mp-33-34 (name=="Special format characteristics", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mp-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-mp-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  |- mrcb008-mu (name=="FIXED-LENGTH DATA ELEMENTS--MUSIC")
   |  |  |
   |  |  |= mrcb008-mu-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-18-19 (name=="Form of composition", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-20 (name=="Format of music", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-21 (name=="Music parts", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-22 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-23 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-24-29 (name=="Accompanying matter", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-30-31 (name=="Literary text for sound recordings", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-32 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-33 (name=="Transposition and arrangement", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-34 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-mu-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-mu-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  |- mrcb008-se (name=="FIXED-LENGTH DATA ELEMENTS--CONTINUING RESOURCES")
   |  |  |
   |  |  |= mrcb008-se-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-18 (name=="Frequency", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-19 (name=="Regularity", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-20 (name=="ISSN center", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-se-21 (name=="Type of continuing resource", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-22 (name=="Form of original item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-23 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-24 (name=="Nature of entire work", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-25-27 (name=="Nature of contents", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-28 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-29 (name=="Conference publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-30-32 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-33 (name=="Original alphabet or script of title", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-34 (name=="Entry convention", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-se-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-se-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  |- mrcb008-vm (name=="FIXED-LENGTH DATA ELEMENTS--VISUAL MATERIALS")
   |  |  |
   |  |  |= mrcb008-vm-00-05 (name=="Date entered on file", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-06 (name=="Type of date/publication status", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-07-10 (name=="Date 1", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-11-14 (name=="Date 2", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-18-20 (name=="Running time for motion pictures and videorecordings", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-21 (name=="In LC collection", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-vm-22 (name=="Target audience", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-23-27 (name=="Accompanying matter", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-vm-28 (name=="Government publication", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-29 (name=="Form of item", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-30 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-31 (name=="Undefined", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-32 (name=="Main entry in body of entry ", obsolete=="yes", value)
   |  |  |
   |  |  |= mrcb008-vm-33 (name=="Type of visual material", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-34 (name=="Technique", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-35-37 (name=="Language", obsolete=="no", value)
   |  |  |
   |  |  |= mrcb008-vm-38 (name=="Modified record", obsolete=="no", value)
   |  |  |
   |  |  += mrcb008-vm-39 (name=="Cataloging source", obsolete=="no", value)
   |  |
   |  +- mrcb008-mx (name=="FIXED-LENGTH DATA ELEMENTS--MIXED MATERIALS")
   |     |
   |     |= mrcb008-mx-00-05 (name=="Date entered on file", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-06 (name=="Type of date/publication status", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-07-10 (name=="Date 1", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-11-14 (name=="Date 2", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-15-17 (name=="Place of publication, production, or execution", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-18-22 (name=="Undefined", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-23 (name=="Form of item", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-24-34 (name=="Undefined", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-35-37 (name=="Language", obsolete=="no", value)
   |     |
   |     |= mrcb008-mx-38 (name=="Modified record", obsolete=="no", value)
   |     |
   |     += mrcb008-mx-39 (name=="Cataloging source", obsolete=="no", value)
   |
   |- mrcb-numbers-and-codes?
   |  |
   |  |- mrcb010? (name=="LIBRARY OF CONGRESS CONTROL NUMBER", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb010-a (name=="LC control number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb010-b (name=="NUCMC control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb010-z (name=="Canceled/invalid LC control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb010-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb011* (name=="LINKING LIBRARY OF CONGRESS CONTROL NUMBER", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  +- mrcb011-a* (name=="Linking LC control number", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb013* (name=="PATENT CONTROL INFORMATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb013-a (name=="Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb013-b (name=="Country", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb013-c (name=="Type of number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb013-d (name=="Date", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb013-e (name=="Status", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb013-f (name=="Party to document", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb013-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb013-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb014* (name=="LINKAGE NUMBER", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb014-a (name=="Linkage number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb014-b (name=="Source of number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb014-z (name=="Canceled or invalid linkage number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb014-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb015? (name=="NATIONAL BIBLIOGRAPHY NUMBER", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb015-a (name=="National bibliography number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb015-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb015-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb015-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb016* (name=="NATIONAL BIBLIOGRAPHIC AGENCY CONTROL NUMBER", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb016-a (name=="Record control number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb016-z (name=="Canceled/invalid control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb016-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb016-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb017* (name=="COPYRIGHT OR LEGAL DEPOSIT NUMBER", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb017-a (name=="Copyright registration number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb017-b (name=="Assigning agency)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb017-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb017-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb017-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb018? (name=="COPYRIGHT ARTICLE-FEE CODE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb018-a (name=="Copyright article-fee code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb018-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb018-8* (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb020* (name=="INTERNATIONAL STANDARD BOOK NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb020-a (name=="International Standard Book Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb020-b (name=="Binding information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb020-c (name=="Terms of availability", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb020-z (name=="Canceled/invalid ISBN", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb020-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb020-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb022* (name=="INTERNATIONAL STANDARD SERIAL NUMBER", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb022-a (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb022-y (name=="Incorrect ISSN", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb022-z (name=="Canceled ISSN", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb022-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb022-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb022-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb024* (name=="OTHER STANDARD IDENTIFIER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb024-a (name=="Standard number or code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb024-c (name=="Terms of availability", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb024-d (name=="Additional codes following the standard number or code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb024-z (name=="Canceled/invalid standard number or code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb024-2 (name=="Source of number or code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb024-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb024-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb025* (name=="OVERSEAS ACQUISITION NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb025-a (name=="Overseas acquisition number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb025-8* (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb026* (name=="FINGERPRINT IDENTIFIER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb026-a (name=="First and second groups of characters", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb026-b (name=="Third and fourth groups of characters", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb026-c (name=="Date", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb026-d (name=="Number of volume or part", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb026-e (name=="Unparsed fingerprint", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb026-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb026-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb026-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb026-8* (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb027* (name=="STANDARD TECHNICAL REPORT NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb027-a (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb027-z (name=="Canceled/invalid number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb027-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb027-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb028* (name=="PUBLISHER NUMBER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb028-a (name=="Publisher number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb028-b (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb028-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb028-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb030* (name=="CODEN DESIGNATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb030-a (name=="CODEN", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb030-z (name=="Canceled/invalid CODEN", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb030-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb030-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb032* (name=="POSTAL REGISTRATION NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb032-a (name=="Postal registration number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb032-b (name=="Source (agency assigning number)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb032-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb032-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb033* (name=="DATE/TIME AND PLACE OF AN EVENT", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb033-a (name=="Formatted date/time", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb033-b (name=="Geographic classification area code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb033-c (name=="Geographic classification subarea code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb033-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb033-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb033-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb034* (name=="CODED CARTOGRAPHIC MATHEMATICAL DATA", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb034-a (name=="Category of scale", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-b (name=="Constant ratio linear horizontal scale", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb034-c (name=="Constant ratio linear vertical scale", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb034-d (name=="Coordinates--westernmost longitude", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-e (name=="Coordinates--easternmost longitude", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-f (name=="Coordinates--northernmost latitude", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-g (name=="Coordinates--southernmost latitude", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-h (name=="Angular scale", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb034-j (name=="Declination--northern limit", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-k (name=="Declination--southern limit", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-m (name=="Right ascension--eastern limit", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-n (name=="Right ascension--western limit", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-p (name=="Equinox", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb034-s (name=="G-ring latitude", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb034-t (name=="G-ring longitude", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb034-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb034-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb035* (name=="SYSTEM CONTROL NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb035-a (name=="System control number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb035-z (name=="Canceled/invalid system control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb035-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb035-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb036? (name=="ORIGINAL STUDY NUMBER FOR COMPUTER DATA FILES", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb036-a (name=="Original study number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb036-b (name=="Source (agency assigning number)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb036-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb036-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb037* (name=="SOURCE OF ACQUISITION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb037-a (name=="Stock number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb037-b (name=="Source of stock number/acquisition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb037-c (name=="Terms of availability", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb037-f (name=="Form of issue", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb037-g (name=="Additional format characteristics", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb037-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb037-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb037-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb038? (name=="RECORD CONTENT LICENSOR", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb038-a (name=="Record content licensor", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb038-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb038-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb040 (name=="CATALOGING SOURCE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb040-a (name=="Original cataloging agency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb040-b (name=="Language of cataloging", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb040-c (name=="Transcribing agency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb040-d (name=="Modifying agency", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb040-e (name=="Description conventions", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb040-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb040-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb041? (name=="LANGUAGE CODE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb041-a (name=="Language code of text/sound track or separate title", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-b (name=="Language code of summary or abstract/overprinted title or subtitle", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-c (name=="Language of separate titles/Language of available translation", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-d (name=="Language code of sung or spoken text", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-e (name=="Language code of librettos", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-f (name=="Language code of table of contents", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-g (name=="Language code of accompanying material other than librettos", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-h (name=="Language code of original and/or intermediate translations of text", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb041-2 (name=="Source of code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb041-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb041-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb042? (name=="AUTHENTICATION CODE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  +- mrcb042-a* (name=="Authentication code", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb043? (name=="GEOGRAPHIC AREA CODE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb043-a (name=="Geographic area code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb043-b (name=="Local GAC code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb043-c (name=="ISO code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb043-2 (name=="Source of local code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb043-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb043-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb044? (name=="COUNTRY OF PUBLISHING/PRODUCING ENTITY CODE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb044-a (name=="MARC country code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb044-b (name=="Local subentity code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb044-c (name=="ISO country code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb044-2 (name=="Source of local subentity code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb044-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb044-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb045? (name=="TIME PERIOD OF CONTENT", obsolete=="no", repeatable=="no", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb045-a (name=="Time period code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb045-b (name=="Formatted 9999 B.C. through C.E. time period", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb045-c (name=="Formatted pre-9999 B.C. time period", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb045-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb045-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb046* (name=="SPECIAL CODED DATES", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb046-a (name=="Type of date code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-b (name=="Date 1 (B.C. date)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-c (name=="Date 1 (C.E. date)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-d (name=="Date 2 (B.C. date)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-e (name=="Date 2 (C.E. date)", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-j (name=="Date resource modified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-k (name=="Beginning or single date created", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-l (name=="Ending date created", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-m (name=="Beginning of date valid", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-n (name=="End of date valid", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-2 (name=="Source of date", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb046-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb046-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb047? (name=="FORM OF MUSICAL COMPOSITION CODE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb047-a (name=="Form of musical composition code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb047-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb048* (name=="NUMBER OF MUSICAL INSTRUMENTS OR VOICES CODE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb048-a (name=="Performer or ensemble", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb048-b (name=="Soloist", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb048-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb050* (name=="LIBRARY OF CONGRESS CALL NUMBER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb050-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb050-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb050-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb050-d (name=="Supplementary class number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb050-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb050-8 (name=="Field link and number sequence", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb051* (name=="LIBRARY OF CONGRESS COPY, ISSUE, OFFPRINT STATEMENT", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb051-a (name=="Classification number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb051-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb051-c (name=="Copy information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb051-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb052* (name=="GEOGRAPHIC CLASSIFICATION", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb052-a (name=="Geographic classification area code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb052-b (name=="Geographic classification subarea code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb052-c (name=="Subject", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb052-d (name=="Populated place name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb052-2 (name=="Code source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb052-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb052-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb055* (name=="CLASSIFICATION NUMBERS ASSIGNED IN CANADA", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb055-a (name=="Classification number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb055-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb055-2 (name=="Source of call/class number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb055-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb055-8 (name=="Field link and field number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb058* (name=="OTHER GEOGRAPHIC CLASSIFICATION CODE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb058-a (name=="Geographic classification area code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb058-b (name=="Geographic classification subarea code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb058-2 (name=="Code source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb058-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb060* (name=="NATIONAL LIBRARY OF MEDICINE CALL NUMBER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb060-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb060-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb060-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb061* (name=="NATIONAL LIBRARY OF MEDICINE COPY STATEMENT", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb061-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb061-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb061-c (name=="Copy information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb061-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb066? (name=="CHARACTER SET PRESENT", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb066-a (name=="Primary G0 character set", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb066-b (name=="Primary G1 character set", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb066-c (name=="G0 or G1 character set", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb070* (name=="NATIONAL AGRICULTURAL LIBRARY CALL NUMBER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb070-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb070-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb070-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb071* (name=="NATIONAL AGRICULTURAL LIBRARY COPY STATEMENT", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb071-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb071-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb071-c (name=="Copy information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb071-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb072* (name=="SUBJECT CATEGORY CODE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb072-a (name=="Subject category code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb072-x (name=="Subject category code subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb072-2 (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb072-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb072-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb073* (name=="TYPE OF PROGRAM OR ORGANIZATION CODE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb073-a (name=="Type of program or organization code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb073-2 (name=="Code source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb073-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb073-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb074* (name=="GPO ITEM NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb074-a (name=="GPO item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb074-z (name=="Canceled/invalid GPO item number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb074-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb080* (name=="UNIVERSAL DECIMAL CLASSIFICATION NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb080-a (name=="Universal Decimal Classification number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb080-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb080-x (name=="Common auxiliary subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb080-2 (name=="Edition identifier", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb080-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb080-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb082* (name=="DEWEY DECIMAL CLASSIFICATION NUMBER", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb082-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb082-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb082-2 (name=="Edition number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb082-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb082-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb084* (name=="OTHER CLASSIFICATION NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb084-a (name=="Classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb084-b (name=="Item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb084-2 (name=="Number source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb084-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb084-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb086* (name=="GOVERNMENT DOCUMENT CLASSIFICATION NUMBER", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb086-a (name=="Classification number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb086-z (name=="Canceled/invalid classification number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb086-2 (name=="Number source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb086-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb086-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb088* (name=="REPORT NUMBER", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb088-a (name=="Report number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb088-z (name=="Canceled/invalid report number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb088-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb088-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-main-entry?
   |  |
   |  |- mrcb100? (name=="MAIN ENTRY--PERSONAL NAME", obsolete=="no", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb100-a (name=="Personal name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-b (name=="Numeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-c (name=="Titles and other words associated with a name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-d (name=="Dates associated with a name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-j (name=="Attribution qualifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-q (name=="Fuller form of name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb100-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb100-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb100-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb110? (name=="MAIN ENTRY--CORPORATE NAME", obsolete=="no", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb110-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-b (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-d (name=="Date of meeting or treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb110-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb110-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb110-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb111? (name=="MAIN ENTRY--MEETING NAME", obsolete=="no", repeatable=="no", i1, i2, name=="SERIES STATEMENT/ADDED ENTRY--MEETING NAME", obsolete=="yes", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb111-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-b (name=="Number (BK CF MP MU SE VM MX)", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-d (name=="Date of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-e (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb111-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb111-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb111-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb130? (name=="MAIN ENTRY--UNIFORM TITLE", obsolete=="no", repeatable=="no", i1, i2)
   |     |
   |     |- mrcb130-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb130-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-h (name=="Medium", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb130-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb130-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb130-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb130-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-s (name=="Version", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb130-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb130-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-title-and-title-related?
   |  |
   |  |- mrcb210? (name=="ABBREVIATED TITLE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb210-a (name=="Abbreviated title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb210-b (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb210-2 (name=="Source", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb210-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb210-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb211* (name=="ACRONYM OR SHORTENED TITLE", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb211-a (name=="Acronym or shortened title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb211-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb212* (name=="VARIANT ACCESS TITLE", obsolete=="yes", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb212-a (name=="Variant access title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb212-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb214* (name=="AUGMENTED TITLE", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb214-a (name=="Augmented title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb214-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb222* (name=="KEY TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb222-a (name=="Key title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb222-b (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb222-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb222-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb240? (name=="UNIFORM TITLE", obsolete=="no", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb240-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb240-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb240-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb240-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb240-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb240-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb240-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb240-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb241* (name=="ROMANIZED TITLE", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb241-a (name=="Romanized title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb241-h (name=="Medium", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb242* (name=="TRANSLATION OF TITLE BY CATALOGING AGENCY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb242-a (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb242-b (name=="Remainder of title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb242-c (name=="Statement of responsibility, etc.", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb242-d (name=="Designation of section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb242-e (name=="Name of part/section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb242-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb242-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb242-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb242-y (name=="Language code of translated title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb242-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb242-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb243? (name=="COLLECTIVE UNIFORM TITLE", obsolete=="no", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb243-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb243-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb243-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb243-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb243-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb243-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb243-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb243-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb245? (name=="TITLE STATEMENT", obsolete=="no", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb245-a (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-b (name=="Remainder of title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-c (name=="Statement of responsibility, etc.", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-d (name=="Designation of section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb245-e (name=="Name of part/section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb245-f (name=="Inclusive dates", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-g (name=="Bulk dates", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-k (name=="Form", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb245-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb245-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb245-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb245-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb245-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb246* (name=="VARYING FORM OF TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb246-a (name=="Title proper/short title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-b (name=="Remainder of title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-d (name=="Designation of section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb246-e (name=="Name of part/section", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb246-f (name=="Date or sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb246-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb246-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb246-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb246-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb247* (name=="FORMER TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb247-a (name=="Title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-b (name=="Remainder of title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-d (name=="Designation of section", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb247-e (name=="Name of part/section", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb247-f (name=="Date or sequential designation", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-h (name=="Medium", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb247-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb247-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb247-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb247-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-edition-imprint-etc?
   |  |
   |  |- mrcb250? (name=="EDITION STATEMENT", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb250-a (name=="Edition statement", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb250-b (name=="Remainder of edition statement", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb250-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb250-8 (name=="Linkage", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb254? (name=="MUSICAL PRESENTATION STATEMENT", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb254-a (name=="Musical presentation statement", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb254-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb254-8 (name=="Linkage", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb255* (name=="CARTOGRAPHIC MATHEMATICAL DATA", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb255-a (name=="Statement of scale", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-b (name=="Statement of projection", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-c (name=="Statement of coordinates", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-d (name=="Statement of zone", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-e (name=="Statement of equinox", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-f (name=="Outer G-ring coordinate pairs", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-g (name=="Exclusion G-ring coordinate pairs", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb255-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb255-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb256? (name=="COMPUTER FILE CHARACTERISTICS", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb256-a (name=="Computer file characteristics", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb256-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb256-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb257? (name=="COUNTRY OF PRODUCING ENTITY FOR ARCHIVAL FILMS", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb257-a (name=="Country of producing entity", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb257-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb257-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb260? (name=="PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb260-a (name=="Place of publication, distribution, etc.", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb260-b (name=="Name of publisher, distributor, etc.", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb260-c (name=="Date of publication, distribution, etc.", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb260-d (name=="Plates of publisher's number for music (Pre-AACR 2)", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb260-e (name=="Place of manufacture", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb260-f (name=="Manufacturer", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb260-g (name=="Date of manufacture", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb260-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb260-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb260-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb261? (name=="IMPRINT STATEMENT FOR FILMS (PRE-AACR 1 REVISED)", obsolete=="yes", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb261-a (name=="Producing company", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb261-b (name=="Releasing compnay", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb261-d (name=="Date of production, release, etc.", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb261-e (name=="Contractual producter", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb261-f (name=="Place of production, release, etc.", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb261-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb261-8 (name=="Field link and sequence number", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb263? (name=="PROJECTED PUBLICATION DATE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb263-a (name=="Projected publication date", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb263-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb263-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb265? (name=="SOURCE FOR ACQUISITION/SUBSCRIPTION ADDRESS", obsolete=="yes", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb265-a (name=="Source for acquisition/subscription address", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb265-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  +- mrcb270* (name=="ADDRESS", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb270-a (name=="Address", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-b (name=="City", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-c (name=="State or province", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-d (name=="Country", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-e (name=="Postal code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-f (name=="Terms preceding attention name", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-g (name=="Attention name", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-h (name=="Attention position", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-i (name=="Type of address", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb270-j (name=="Specialized telephone number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-k (name=="Telephone number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-l (name=="Fax number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-m (name=="Electronic mail address", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-n (name=="TDD or TTY number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-p (name=="Contact person", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-q (name=="Title of contact person", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-r (name=="Hours", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb270-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb270-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-physical-description?
   |  |
   |  |- mrcb300* (name=="PHYSICAL DESCRIPTION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb300-a (name=="Extent", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb300-b (name=="Other physical details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb300-c (name=="Dimensions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb300-e (name=="Accompanying material", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb300-f (name=="Type of unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb300-g (name=="Size of unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb300-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb300-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb300-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb301* (name=="PHYSICAL DESCRIPTION FOR FILMS (PRE-AACR 2)", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb301-a (name=="Extent of item", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb301-b (name=="Sound characteristics", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb301-c (name=="Color characteristics", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb301-d (name=="Dimensions", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb301-e (name=="Accompanying material", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb301-f (name=="Speed", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb302* (name=="PAGE OR ITEM COUNT", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  +- mrcb302-a* (name=="Page count", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb303* (name=="SUBORDINATE ENTITIES", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb303-a (name=="Name or description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb303-b (name=="Schedule", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb303-c (name=="Location", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb303-p (name=="Contact person", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb303-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb303-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb304* (name=="LINEAR FOOTAGE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  +- mrcb304-a* (name=="Linear footage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb305* (name=="PHYSICAL DESCRIPTION FOR SOUND RECORDINGS (Pre-AACR 2)", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb305-a (name=="Extent", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb305-b (name=="Other physical details", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb305-c (name=="Dimensions", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb305-d (name=="Microgroove or standard", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb305-e (name=="Stereophonic, monaural", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb305-f (name=="Number of tracks", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb305-m (name=="Serial identification", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb305-n (name=="Matrix and/or take number", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb305-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb306? (name=="PLAYING TIME", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb306-a (name=="Playing time", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb306-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb306-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb307? (name=="HOURS, ETC.", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb307-a (name=="Hours", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb307-b (name=="Additional information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb307-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb307-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb308* (name=="PHYSICAL DESCRIPTION FOR FILMS (ARCHIVAL)", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb308-a (name=="Number of reels", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb308-b (name=="Footage", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb308-c (name=="Sound characteristics", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb308-d (name=="Color characteristics", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb308-e (name=="Width", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb308-f (name=="Presentation format", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb308-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb310? (name=="CURRENT PUBLICATION FREQUENCY", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb310-a (name=="Current publication frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb310-b (name=="Date of current publication frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb310-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb310-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb311* (name=="MEETING ROOMS AND FACILITIES AVAILABLE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb311-a (name=="General description of facilities", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-b (name=="Name and location", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-c (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-d (name=="Capacity", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-e (name=="Equipment available", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-f (name=="Rental fee", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-g (name=="Special restrictions", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-h (name=="Accommodations for the disabled", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-m (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-p (name=="Contact person", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb311-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb311-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb312* (name=="EQUIPMENT AVAILABLE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb312-a (name=="Type of equipment", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-b (name=="Brand name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-c (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-f (name=="Rental fee", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-g (name=="Special restrictions", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-h (name=="Accommodations for the disabled", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-m (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-p (name=="Contact person", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb312-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb312-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb315? (name=="FREQUENCY", obsolete=="yes", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb315-a (name=="Frequency", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb315-b (name=="Dates of frequency", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb315-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb321* (name=="FORMER PUBLICATION FREQUENCY", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb321-a (name=="Former publication frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb321-b (name=="Dates of former publication frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb321-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb321-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb340* (name=="PHYSICAL MEDIUM", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb340-a (name=="Material base and configuration", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-b (name=="Dimensions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-c (name=="Materials applied to surface", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-d (name=="Information recording technique", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-e (name=="Support", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-f (name=="Production rate/ratio", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-h (name=="Location within medium", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-i (name=="Technical specifications of medium", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb340-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb340-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb340-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb342* (name=="GEOSPATIAL REFERENCE DATA", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb342-a (name=="Name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-b (name=="Coordinate or distance units", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-c (name=="Latitude resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-d (name=="Longitude resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-e (name=="Standard parallel or oblique line latitude", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb342-f (name=="Oblique line longitude", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb342-g (name=="Longitude of central meridian or projection center", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-h (name=="Latitude of projection origin or projection center", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-i (name=="False easting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-j (name=="False northing", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-k (name=="Scale factor", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-l (name=="Height of perspective point above surface", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-m (name=="Azimuthal angle", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-n (name=="Azimuth measure point longitude or straight vertical longitude from pole", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-o (name=="Landsat number and path number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-p (name=="Zone identifier", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-q (name=="Ellipsoid name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-r (name=="Semi-major axis", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-s (name=="Denominator of flattening ratio", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-t (name=="Vertical resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-u (name=="Vertical encoding method", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-v (name=="Local planar, local, or other projection or grid description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-w (name=="Local planar or local georeference information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-2 (name=="Reference method used", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb342-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb342-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb343* (name=="PLANAR COORDINATE DATA", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb343-a (name=="Planar coordinate encoding method", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-b (name=="Planar distance units", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-c (name=="Abscissa resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-d (name=="Ordinate resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-e (name=="Distance resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-f (name=="Bearing resolution", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb343-g (name=="Bearing units", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-h (name=="Bearing reference direction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-i (name=="Bearing reference meridian", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb343-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb343-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb350? (name=="PRICE", obsolete=="yes", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb350-a (name=="Price", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb350-b (name=="Form of issue", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb350-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb351* (name=="ORGANIZATION AND ARRANGEMENT OF MATERIALS", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb351-a (name=="Organization", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb351-b (name=="Arrangement", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb351-c (name=="Hierarchical level", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb351-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb351-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb351-8 (name=="Linkage", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb352* (name=="DIGITAL GRAPHIC REPRESENTATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb352-a (name=="Direct reference method", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-b (name=="Object type", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb352-c (name=="Object count", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb352-d (name=="Row count", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-e (name=="Column count", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-f (name=="Vertical count", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-g (name=="VPF topology level", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-i (name=="Indirect reference description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-q (name=="Format of the digital image", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb352-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb352-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb355* (name=="SECURITY CLASSIFICATION CONTROL", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb355-a (name=="Security classification", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-b (name=="Handling instructions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb355-c (name=="External dissemination information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb355-d (name=="Downgrading or declassification event", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-e (name=="Classification system", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-f (name=="Country of origin code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-g (name=="Downgrading date", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-h (name=="Declassification date", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb355-j (name=="Authorization", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb355-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb355-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb357? (name=="ORIGINATOR DISSEMINATION CONTROL", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb357-a (name=="Originator control term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb357-b (name=="Originating agency", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb357-c (name=="Authorized recipients of material", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb357-g (name=="Other restrictions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb357-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb357-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb362* (name=="DATES OF PUBLICATION AND/OR SEQUENTIAL DESIGNATION", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb362-a (name=="Dates of publication and/or sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb362-z (name=="Source of information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb362-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb362-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb365* (name=="TRADE PRICE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb365-a (name=="Price type code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-b (name=="Price amount", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-c (name=="Currency code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-d (name=="Unit of pricing", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-e (name=="Price note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-f (name=="Price effective from", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-g (name=="Price effective until", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-h (name=="Tax rate 1", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-i (name=="Tax rate 2", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-j (name=="ISO country code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-k (name=="MARC country code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-m (name=="Identification of pricing entity", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-2 (name=="Source of price type code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb365-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb365-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb366* (name=="TRADE AVAILABILITY INFORMATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb366-a (name=="Publishers' compressed title identification", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-b (name=="Detailed date of publication", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-c (name=="Availability status code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-d (name=="Expected next availability date", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-e (name=="Note", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-f (name=="Publisher's discount category", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-g (name=="Date made out of print", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-j (name=="ISO country code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-k (name=="MARC country code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-m (name=="Identification of agency", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-2 (name=="Source of availability status code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb366-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb366-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-series-statement?
   |  |
   |  |- mrcb400* (name=="SERIES STATEMENT/ADDED ENTRY--PERSONAL NAME", obsolete=="yes", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb400-a (name=="Personal name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-b (name=="Numeration", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-c (name=="Titles and other words associated with a name", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-d (name=="Dates associated with a name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-n (name=="Number of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-v (name=="Volume/sequential designation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-x (name=="International Standard Serial Number", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb400-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb400-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb400-8 (name=="Field link and sequence number", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb410* (name=="SERIES STATEMENT/ADDED ENTRY--CORPORATE NAME", obsolete=="yes", repeatable=="no", i1, i2)
   |  |  |
   |  |  |- mrcb410-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-b (name=="Subordinate unit", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-c (name=="Location of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-d (name=="Date of meeting or treaty signing", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-n (name=="Number of part/section/meeting", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-v (name=="Volume/sequential designation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-x (name=="International Standard Serial Number", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb410-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb410-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb410-8 (name=="Field link and sequence number", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb411*
   |  |  |
   |  |  |- mrcb411-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-c (name=="Location of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-d (name=="Date of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-e (name=="Subordinate unit", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb411-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb411-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-n (name=="Number of part/section/meeting", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb411-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb411-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-v (name=="Volume/sequential designation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-x (name=="International Standard Serial Number", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb411-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb411-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb411-8 (name=="Field link and sequence number", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb440* (name=="SERIES STATEMENT/ADDED ENTRY--TITLE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb440-a (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb440-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb440-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb440-v (name=="Volume number/sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb440-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb440-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb440-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb490* (name=="SERIES STATEMENT", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |     |
   |     |- mrcb490-a (name=="Series statement", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb490-l (name=="Library of Congress call number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb490-v (name=="Volume number/sequential designation", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb490-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb490-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb490-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-notes?
   |  |
   |  |- mrcb500* (name=="GENERAL NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb500-a (name=="General note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb500-l (name=="Library of Congress call number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb500-x (name=="International Standard Serial Number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb500-z (name=="Source of note information", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb500-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb500-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb500-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb500-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb501* (name=="WITH NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb501-a (name=="With note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb501-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb501-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb501-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb502* (name=="DISSERTATION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb502-a (name=="Dissertation note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb502-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb502-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb503* (name=="BIBLIOGRAPHIC HISTORY NOTE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb503-a (name=="Bibliographic history note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb503-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb504* (name=="BIBLIOGRAPHY, ETC. NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb504-a (name=="Bibliography, etc. note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb504-b (name=="Number of references", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb504-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb504-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb505? (name=="FORMATTED CONTENTS NOTE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb505-a (name=="Formatted contents note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb505-g (name=="Miscellaneous information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb505-r (name=="Statement of responsibility", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb505-t (name=="Title", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb505-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb505-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb505-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb506* (name=="RESTRICTIONS ON ACCESS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb506-a (name=="Terms governing access", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb506-b (name=="Jurisdiction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb506-c (name=="Physical access provisions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb506-d (name=="Authorized users", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb506-e (name=="Authorization", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb506-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb506-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb506-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb506-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb506-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb507? (name=="SCALE NOTE FOR GRAPHIC MATERIAL", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb507-a (name=="Representative fraction of scale note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb507-b (name=="Remainder of scale note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb507-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb507-8 (name=="Linkage", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb508? (name=="CREATION/PRODUCTION CREDITS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb508-a (name=="Creation/production credits note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb508-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb508-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb510* (name=="CITATION/REFERENCES NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb510-a (name=="Name of source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb510-b (name=="Coverage of source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb510-c (name=="Location within source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb510-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb510-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb510-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb510-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb511* (name=="PARTICIPANT OR PERFORMER NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb511-a (name=="Participant or performer note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb511-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb511-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb512* (name=="EARLIER OR LATER VOLUMES SEPARATELY CATALOGED NOTE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb512-a (name=="Earlier or later volumes separately cataloged note", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb512-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb513* (name=="TYPE OF REPORT AND PERIOD COVERED NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb513-a (name=="Type of report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb513-b (name=="Period covered", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb513-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb513-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb514? (name=="DATA QUALITY NOTE", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb514-a (name=="Attribute accuracy report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-b (name=="Attribute accuracy value", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-c (name=="Attribute accuracy explanation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-d (name=="Logical consistency report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-e (name=="Completeness report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-f (name=="Horizontal position accuracy report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-g (name=="Horizontal position accuracy value", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-h (name=="Horizontal position accuracy explanation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-i (name=="Vertical positional accuracy report", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-j (name=="Vertical positional accuracy value", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-k (name=="Vertical positional accuracy explanation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-m (name=="Cloud cover", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb514-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-z (name=="Display note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb514-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb514-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb515* (name=="NUMBERING PECULIARITIES NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb515-a (name=="Numbering peculiarities note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb515-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb515-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb515-8 (name=="Field link and sequence data", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb516* (name=="TYPE OF COMPUTER FILE OR DATA NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb516-a (name=="Type of computer file or data note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb516-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb516-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb517* (name=="CATEGORIES OF FILMS NOTE (ARCHIVAL)", obsolete=="yes", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb517-a (name=="Different formats", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb517-b (name=="Content descriptors", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb517-c (name=="Additional animation techniques", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb518* (name=="DATE/TIME AND PLACE OF AN EVENT NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb518-a (name=="Date/time and place of an event note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb518-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb518-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb518-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb520* (name=="SUMMARY, ETC.", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb520-a (name=="Summary, etc. note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb520-b (name=="Expansion of summary note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb520-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb520-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb520-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb520-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb520-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb521* (name=="TARGET AUDIENCE NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb521-a (name=="Target audience note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb521-b (name=="Source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb521-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb521-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb521-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb522? (name=="GEOGRAPHIC COVERAGE NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb522-a (name=="Geographic coverage note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb522-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb522-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb523? (name=="TIME PERIOD OF CONTENT NOTE", obsolete=="yes", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb523-a (name=="Time period of content note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb523-b (name=="Dates of data collection note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb523-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb524* (name=="PREFERRED CITATION OF DESCRIBED MATERIALS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb524-a (name=="Preferred citation of described materials note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb524-2 (name=="Source of schema used", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb524-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb524-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb524-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb525* (name=="SUPPLEMENT NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb525-a (name=="Supplement note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb525-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb525-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb525-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb526* (name=="STUDY PROGRAM INFORMATION NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb526-a (name=="Program name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-b (name=="Interest level", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-c (name=="Reading level", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-d (name=="Title point value", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb526-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb526-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb526-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb526-8 (name=="Field and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb527* (name=="CENSORSHIP NOTE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb527-a (name=="Censorship note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb527-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb530* (name=="ADDITIONAL PHYSICAL FORM AVAILABLE NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb530-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb530-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-a (name=="Additional physical form available note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-b (name=="Availability source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-c (name=="Availability conditions", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-d (name=="Order number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb530-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  +- mrcb530-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb531* (name=="ELIGIBILITY, FEES, PROCEDURES NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb531-a (name=="Eligibility", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb531-b (name=="Fee", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb531-c (name=="Admission procedures", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb531-d (name=="Documents required", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb531-e (name=="Waiting list", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb531-f (name=="Waiting period", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb531-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb531-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb533* (name=="REPRODUCTION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb533-a (name=="Type of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb533-b (name=="Place of reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb533-c (name=="Agency responsible for reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb533-d (name=="Date of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb533-e (name=="Physical description of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb533-f (name=="Series statement of reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb533-m (name=="Dates and/or sequential designation of issues reproduced", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb533-n (name=="Note about reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb533-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb533-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb533-7 (name=="Fixed-length data elements of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb533-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb534* (name=="ORIGINAL VERSION NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb534-a (name=="Main entry of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-b (name=="Edition statement of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-c (name=="Publication, distribution, etc. of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-e (name=="Physical description, etc. of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-f (name=="Series statement of original", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb534-k (name=="Key title of original", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb534-l (name=="Location of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-m (name=="Material specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-n (name=="Note about original", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb534-p (name=="Introductory phrase", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-t (name=="Title statement of original", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb534-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb534-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb534-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb534-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb535* (name=="LOCATION OF ORIGINALS/DUPLICATES NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb535-a (name=="Custodian", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb535-b (name=="Postal address", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb535-c (name=="Country", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb535-d (name=="Telecommunications address", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb535-g (name=="Repository location code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb535-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb535-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb535-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb536* (name=="FUNDING INFORMATION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb536-a (name=="Text of note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb536-b (name=="Contract number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-c (name=="Grant number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-d (name=="Undifferentiated number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-e (name=="Program element number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-f (name=="Project number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-g (name=="Task number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-h (name=="Work unit number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb536-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb536-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb537? (name=="SOURCE OF DATA NOTE", obsolete=="yes", repeatable=="no", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb537-a (name=="Source of data note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb537-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb538* (name=="SYSTEM DETAILS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb538-a (name=="System details note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb538-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb538-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb538-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb538-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb538-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb540* (name=="TERMS GOVERNING USE AND REPRODUCTION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb540-a (name=="Terms governing use and reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-b (name=="Jurisdiction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-c (name=="Authorization", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-d (name=="Authorized users", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb540-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb540-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb540-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb541* (name=="IMMEDIATE SOURCE OF ACQUISITION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb541-a (name=="Source of acquisition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-b (name=="Address", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-c (name=="Method of acquisition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-d (name=="Date of acquisition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-e (name=="Accession number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-f (name=="Owner", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-h (name=="Purchase price", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-n (name=="Extent", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb541-o (name=="Type of unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb541-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb541-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb541-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb543* (name=="SOLICITATION INFORMATION NOTE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb543-a (name=="Solicitation information note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb543-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb544* (name=="LOCATION OF OTHER ARCHIVAL MATERIALS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb544-a (name=="Custodian", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-b (name=="Address", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-c (name=="Country", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-d (name=="Title", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-e (name=="Provenance", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb544-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb544-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb544-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb545* (name=="BIOGRAPHICAL OR HISTORICAL DATA", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb545-a (name=="Biographical or historical data", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb545-b (name=="Expansion", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb545-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb545-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb545-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb546* (name=="LANGUAGE NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb546-a (name=="Language note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb546-b (name=="Information code or alphabet", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb546-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb546-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb546-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb546-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb547* (name=="FORMER TITLE COMPLEXITY NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb547-a (name=="Former title complexity note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb547-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb547-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb547-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb550* (name=="ISSUING BODY NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb550-a (name=="Issuing body note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb550-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb550-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb550-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb552* (name=="ENTITY AND ATTRIBUTE INFORMATION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb552-a (name=="Entity type label", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-b (name=="Entity type definition and source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-c (name=="Attribute label", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-d (name=="Attribute definition and source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-e (name=="Enumerated domain value", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-f (name=="Enumerated domain value definition and source", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-g (name=="Range domain minimum and maximum", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-h (name=="Codeset name and source", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-i (name=="Unrepresentable domain", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-j (name=="Attribute units of measurement and resolution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-k (name=="Beginning date and ending date of attribute values", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-l (name=="Attribute value accuracy", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-m (name=="Attribute value accuracy explanation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-n (name=="Attribute measurement frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb552-o (name=="Entity and attribute overview", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-p (name=="Entity and attribute detail citation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-z (name=="Display note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb552-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb552-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb555* (name=="CUMULATIVE INDEX/FINDING AIDS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb555-a (name=="Cumulative index/finding aids note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb555-b (name=="Availability source", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb555-c (name=="Degree of control", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb555-d (name=="Bibliographic reference", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb555-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb555-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb555-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb555-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb556* (name=="INFORMATION ABOUT DOCUMENTATION NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb556-a (name=="Information about documentation note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb556-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb556-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb556-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb561* (name=="OWNERSHIP AND CUSTODIAL HISTORY", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb561-a (name=="History", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb561-b (name=="Time of collation", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb561-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb561-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb561-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb561-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb562* (name=="COPY AND VERSION IDENTIFICATION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb562-a (name=="Identifying markings", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb562-b (name=="Copy identification", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb562-c (name=="Version identification", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb562-d (name=="Presentation format", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb562-e (name=="Number of copies", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb562-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb562-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb562-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb562-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb563* (name=="BINDING INFORMATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb563-a (name=="Binding note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb563-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb563-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb563-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb563-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb563-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb565* (name=="CASE FILE CHARACTERISTICS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb565-a (name=="Number of cases/variables", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb565-b (name=="Name of variable", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb565-c (name=="Unit of analysis", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb565-d (name=="Universe of data", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb565-e (name=="Filing scheme or code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb565-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb565-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb565-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb567* (name=="METHODOLOGY NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb567-a (name=="Methodology note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb567-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb567-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb570* (name=="PERSONNEL NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb570-a (name=="Personnel note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb570-b (name=="Election information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb570-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb570-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb571* (name=="VOLUNTEERS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb571-a (name=="Volunteers note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb571-b (name=="Special requirements", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb571-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb571-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb572* (name=="AFFILIATION AND OTHER RELATIONSHIPS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb572-a (name=="Affiliation and other relationships note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb572-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb572-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb573* (name=="CREDENTIALS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb573-a (name=="Credentials note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb573-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb573-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb574* (name=="TRANSPORTATION AND DIRECTIONS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb574-a (name=="Transportation and directions note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb574-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb574-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb575* (name=="ACCOMMODATIONS FOR THE DISABLED NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb575-a (name=="Accommodations for the disabled note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb575-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb575-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb576* (name=="SERVICES AVAILABLE NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb576-a (name=="Services available note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb576-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb576-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb580* (name=="LINKING ENTRY COMPLEXITY NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb580-a (name=="Linking entry complexity note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb580-z (name=="Source of note information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb580-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb580-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb581* (name=="PUBLICATIONS ABOUT DESCRIBED MATERIALS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb581-a (name=="Publications about described materials note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb581-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb581-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb581-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb581-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb582* (name=="RELATED COMPUTER FILES NOTE", obsolete=="yes", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb582-a (name=="Related computer files note", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb582-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb583* (name=="ACTION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb583-a (name=="Action", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb583-b (name=="Action identification", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-c (name=="Time/date of action", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-d (name=="Action interval", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-e (name=="Contingency for action", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-f (name=="Authorization", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-h (name=="Jurisdiction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-i (name=="Method of action", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-j (name=="Site of action", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-k (name=="Action agent", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-l (name=="Status", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-n (name=="Extent", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-o (name=="Type of unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb583-2 (name=="Source of item", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb583-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb583-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb583-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb583-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb584* (name=="ACCUMULATION AND FREQUENCY OF USE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb584-a (name=="Accumulation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb584-b (name=="Frequency of use", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb584-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb584-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb584-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb584-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb585* (name=="EXHIBITIONS NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb585-a (name=="Exhibitions note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb585-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb585-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb585-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb585-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb586* (name=="AWARDS NOTE", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb586-a (name=="Awards note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb586-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb586-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb586-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb587* (name=="OTHER INFORMATION AVAILABLE NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb587-a (name=="Other information available note", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb587-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb587-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-subject-access?
   |  |
   |  |- mrcb600* (name=="SUBJECT ADDED ENTRY--PERSONAL NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb600-a (name=="Personal name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-b (name=="Numeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-c (name=="Titles and other words associated with a name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-d (name=="Dates associated with a name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-j (name=="Attribution qualifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-q (name=="Fuller form of name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb600-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb600-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb600-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb610* (name=="SUBJECT ADDED ENTRY--CORPORATE NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb610-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-b (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-d (name=="Date of meeting or treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb610-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb610-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb610-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb611* (name=="SUBJECT ADDED ENTRY--MEETING NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb611-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-b (name=="Number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-d (name=="Date of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-e (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb611-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb611-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb611-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb630* (name=="SUBJECT ADDED ENTRY--UNIFORM TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb630-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb630-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb630-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb630-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb648* (name=="SUBJECT ADDED ENTRY--CHRONOLOGICAL TERM", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb648-a (name=="Chronological term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb648-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb648-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb648-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb648-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb648-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb648-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb648-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb648-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb650* (name=="SUBJECT ADDED ENTRY--TOPICAL TERM", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb650-a (name=="Topical term or geographic name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-b (name=="Topical term following geographic name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-c (name=="Location of event", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-d (name=="Active dates", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-e (name=="Relator term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb650-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb650-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb650-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb650-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb650-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb650-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb651* (name=="SUBJECT ADDED ENTRY--GEOGRAPHIC NAME", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb651-a (name=="Geographic name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb651-b (name=="Geographic name following place entry element", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb651-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb651-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb651-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb651-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb651-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb651-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb651-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb651-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb652* (name=="SUBJECT ADDED ENTRY--REVERSED GEOGRAPHIC", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb652-a (name=="Geographic name of place element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb652-x (name=="General subdivision", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb652-y (name=="Chronological subdivision", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb652-z (name=="Geographic subdivision", obsolete=="yes", repeatable=="yes")
   |  |
   |  |- mrcb653* (name=="INDEX TERM--UNCONTROLLED", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb653-a (name=="Uncontrolled term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb653-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb653-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb654* (name=="SUBJECT ADDED ENTRY--FACETED TOPICAL TERMS", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb654-a (name=="Focus term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-b (name=="Non-focus term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-c (name=="Facet/hierarchy designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb654-2 (name=="Source of heading or term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb654-3 (name=="Material specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb654-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb654-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb655* (name=="INDEX TERM--GENRE/FORM/", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb655-a (name=="Genre/form data or focus term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb655-b (name=="Non-focus term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-c (name=="Facet/hierarchy designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb655-2 (name=="Source of term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb655-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb655-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb655-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb655-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb656* (name=="INDEX TERM--OCCUPATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-7")
   |  |  |
   |  |  |- mrcb656-a (name=="Occupation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb656-k (name=="Form", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb656-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb656-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb656-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb656-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb656-2 (name=="Source of term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb656-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb656-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb656-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb657* (name=="INDEX TERM--FUNCTION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb657-a (name=="Function", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb657-v (name=="Form subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb657-x (name=="General subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb657-y (name=="Chronological subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb657-z (name=="Geographic subdivision", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb657-2 (name=="Source of term", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb657-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb657-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb657-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb658* (name=="INDEX TERM--CURRICULUM OBJECTIVE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb658-a (name=="Main curriculum objective", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb658-b (name=="Subordinate curriculum objective", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb658-c (name=="Curriculum code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb658-d (name=="Correlation factor", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb658-2 (name=="Source of term", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb658-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb658-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-added-entry?
   |  |
   |  |- mrcb700* (name=="ADDED ENTRY--PERSONAL NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb700-a (name=="Personal name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-b (name=="Numeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-c (name=="Titles and other words associated with a name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-d (name=="Dates associated with a name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-j (name=="Attribution qualifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-q (name=="Fuller form of name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb700-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb700-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb700-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb705* (name=="ADDED ENTRY--PERSONAL NAME (PERFORMER)", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb705-a (name=="Personal name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-b (name=="Numeration", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-c (name=="Titles and other words associated with a name", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-d (name=="Dates associated with a name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-h (name=="Medium", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-m (name=="Medium of performance for music", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-n (name=="Number of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-o (name=="Arranged statement for music", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb705-r (name=="Key for music", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb705-s (name=="Version", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb705-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb710* (name=="ADDED ENTRY--CORPORATE NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb710-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-b (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-d (name=="Date of meeting or treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb710-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb710-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb710-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb711* (name=="ADDED ENTRY--MEETING NAME", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb711-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-b (name=="Number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-d (name=="Date of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-e (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb711-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb711-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb711-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb715* (name=="ADDED ENTRY--CORPORATE NAME-PERFORMING GROUP", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb715-a (name=="Corporate name or jurisdiction name ", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-b (name=="Subordinate unit", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-h (name=="Medium", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-m (name=="Medium of performance for music", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-n (name=="Number of part/section/meeting", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-o (name=="Arranged statement for music", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb715-r (name=="Key for music", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-s (name=="Version", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb715-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb715-u (name=="Nonprinting information", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb720* (name=="ADDED ENTRY--UNCONTROLLED NAME", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb720-a (name=="Name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb720-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb720-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb720-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb720-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb730* (name=="ADDED ENTRY--UNIFORM TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb730-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb730-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb730-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb730-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb730-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb730-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb730-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb730-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb740* (name=="ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb740-a (name=="Uncontrolled related/analytical title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb740-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb740-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb740-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb740-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb740-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb740-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb752* (name=="ADDED ENTRY--HIERARCHICAL PLACE NAME", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb752-a (name=="Country", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb752-b (name=="State, province, territory", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb752-c (name=="County, region, islands area", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb752-d (name=="City", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb752-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb752-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb753* (name=="SYSTEM DETAILS ACCESS TO COMPUTER FILES", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb753-a (name=="Make and model of machine", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb753-b (name=="Programming language", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb753-c (name=="Operating system", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb753-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb753-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb754* (name=="ADDED ENTRY--TAXONOMIC IDENTIFICATION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb754-a (name=="Taxonomic name/taxonomic hierarchical category", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb754-c (name=="Taxonomic category", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb754-d (name=="Common or alternative name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb754-x (name=="Non-public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb754-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb754-2 (name=="Source of taxonomic identification", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb754-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb754-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb755* (name=="ADDED ENTRY--PHYSICAL CHARACTERISTICS", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb755-a (name=="Access term", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb755-x (name=="General subdivision", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb755-y (name=="Chronological subdivision", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb755-z (name=="Geographic subdivision", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb755-2 (name=="Source of term", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb755-3 (name=="Materials specified", obsolete=="yes", repeatable=="no")
   |     |
   |     +- mrcb755-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |
   |- mrcb-linking-entry?
   |  |
   |  |- mrcb760* (name=="MAIN SERIES ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb760-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb760-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb760-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb760-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb760-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb760-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb760-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb762* (name=="SUBSERIES ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb762-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb762-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb762-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb762-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb762-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb762-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb762-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb765* (name=="ORIGINAL LANGUAGE ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb765-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb765-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb765-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb765-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb767* (name=="TRANSLATION ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb767-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb767-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb767-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb767-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb770* (name=="SUPPLEMENT/SPECIAL ISSUE ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb770-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb770-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb770-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb770-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb772* (name=="SUPPLEMENT PARENT ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb772-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb772-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb772-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb772-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb773* (name=="HOST ITEM ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb773-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-p (name=="Abbreviated title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-q (name=="Enumeration and first page", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb773-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb773-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb773-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb774* (name=="CONSTITUENT UNIT ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb774-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb774-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb774-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb774-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb775* (name=="OTHER EDITION ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb775-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-e (name=="Language code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-f (name=="Country code", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb775-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb775-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb775-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb776* (name=="ADDITIONAL PHYSICAL FORM ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb776-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb776-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb776-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb776-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb777* (name=="ISSUED WITH ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb777-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb777-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb777-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb777-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb777-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb777-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb777-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb777-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb780* (name=="PRECEDING ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb780-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb780-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb780-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb780-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb785* (name=="SUCCEEDING ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb785-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb785-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb785-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb785-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb786* (name=="DATA SOURCE ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb786-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-b (name=="Edition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-i (name=="Display text", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-j (name=="Period of content", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-n (name=="Note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-p (name=="Abbreviated title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-t (name=="Title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-v (name=="Source contribution", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-z (name=="International Standard

 Book Number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb786-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb786-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb786-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb787* (name=="NONSPECIFIC RELATIONSHIP ENTRY", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb787-a (name=="Main entry heading", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-b (name=="Edition", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-c (name=="Qualifying information", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-d (name=="Place, publisher, and date of publication", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-g (name=="Relationship information", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-h (name=="Physical description", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-i (name=="Display text", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-k (name=="Series data for related item", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-m (name=="Material-specific details", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-n (name=="Note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-o (name=="Other item identifier", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-q (name=="Parallel title", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb787-r (name=="Report number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-s (name=="Uniform title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-t (name=="Title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-u (name=="Standard Technical Report Number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-x (name=="International Standard Serial Number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-y (name=="CODEN designation", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-z (name=="International Standard Book Number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb787-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb787-7 (name=="Control subfield", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb787-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-series-added-entry?
   |  |
   |  |- mrcb800* (name=="SERIES ADDED ENTRY--PERSONAL NAME", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb800-a (name=="Personal name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-b (name=="Numeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-c (name=="Titles and other words associated with a name", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-d (name=="Dates associated with a name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-j (name=="Attribution qualifier", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-q (name=="Fuller form of name", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-v (name=="Volume/sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb800-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb800-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb800-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb810* (name=="SERIES ADDED ENTRY--CORPORATE NAME", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb810-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-b (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-d (name=="Date of meeting or treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-e (name=="Relator term", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-v (name=="Volume/sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb810-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb810-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb810-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb811* (name=="SERIES ADDED ENTRY--MEETING NAME", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
   |  |  |
   |  |  |- mrcb811-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-b (name=="Number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-c (name=="Location of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-d (name=="Date of meeting", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-e (name=="Subordinate unit", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-n (name=="Number of part/section/meeting", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-u (name=="Affiliation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-v (name=="Volume/sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb811-4 (name=="Relator code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb811-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb811-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb830* (name=="SERIES ADDED ENTRY--UNIFORM TITLE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2)
   |  |  |
   |  |  |- mrcb830-a (name=="Uniform title", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-d (name=="Date of treaty signing", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb830-f (name=="Date of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-g (name=="Miscellaneous information", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-h (name=="Medium", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-k (name=="Form subheading", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb830-l (name=="Language of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-m (name=="Medium of performance for music", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb830-n (name=="Number of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb830-o (name=="Arranged statement for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-p (name=="Name of part/section of a work", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb830-r (name=="Key for music", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-s (name=="Version", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-t (name=="Title of a work", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-v (name=="Volume/sequential designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb830-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb830-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb840* (name=="SERIES ADDED ENTRY--TITLE", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2)
   |     |
   |     |- mrcb840-a (name=="Title", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb840-h (name=="Medium", obsolete=="yes", repeatable=="yes")
   |     |
   |     +- mrcb840-v (name=="Volume or number", obsolete=="yes", repeatable=="yes")
   |
   |- mrcb-holdings-notes?
   |  |
   |  |- mrcb841? (name=="HOLDINGS CODED DATA VALUES", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb841-a (name=="Type of record", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb841-b (name=="Fixed-length data elements", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb841-e (name=="Encoding level", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb842? (name=="TEXTUAL PHYSICAL FORM DESIGNATOR", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb842-a (name=="Textual physical form designator", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb842-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb842-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb843* (name=="REPRODUCTION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb843-a (name=="Type of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb843-b (name=="Place of reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb843-c (name=="Agency responsible for reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb843-d (name=="Date of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb843-e (name=="Physical description of reproduction", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb843-f (name=="Series statement of reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb843-m (name=="Dates and/or sequential designation of issues reproduced", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb843-n (name=="Note about reproduction", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb843-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb843-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |= mrcb843-7 (name=="Fixed-length data elements of reproduction", obsolete=="no", repeatable=="no", value)
   |  |  |
   |  |  +- mrcb843-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb844? (name=="NAME OF UNIT", obsolete=="no", repeatable=="no", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb844-a (name=="Name of unit", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb844-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb844-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb845* (name=="TERMS GOVERNING USE AND REPRODUCTION NOTE", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb845-a (name=="Terms governing use and reproduction", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-b (name=="Jurisdiction", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-c (name=="Authorization", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-d (name=="Authorized users", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-5 (name=="Institution to which field applies", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb845-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb845-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-location?
   |  |
   |  |- mrcb850* (name=="HOLDING INSTITUTION", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb850-a (name=="Holding institution", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb850-b (name=="Holdings", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb850-d (name=="Inclusive dates", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb850-e (name=="Retention statement", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb850-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb851* (name=="LOCATION", obsolete=="yes", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb851-a (name=="Name (custodian or owner)", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-b (name=="Institutional division", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-c (name=="Street address", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-d (name=="Country", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-e (name=="Location of units", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-f (name=="Item number", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-g (name=="Repository location code", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb851-3 (name=="Materials specified", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  +- mrcb851-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  +- mrcb852* (name=="LOCATION", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb852-a (name=="Location", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-b (name=="Sublocation or collection", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-c (name=="Shelving location", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-e (name=="Address", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-f (name=="Coded location qualifier", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-g (name=="Non-coded location qualifier", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-h (name=="Classification part", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-i (name=="Item part", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-j (name=="Shelving control number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-k (name=="Call number prefix", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-l (name=="Shelving form of title", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-m (name=="Call number suffix", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-n (name=="Country code", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-p (name=="Piece designation", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-q (name=="Piece physical condition", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-s (name=="Copyright article-fee code", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb852-2 (name=="Source of classification or shelving scheme", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb852-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb852-8 (name=="Sequence number", obsolete=="no", repeatable=="no")
   |
   |- mrcb-captions-and-patterns?
   |  |
   |  |- mrcb853* (name=="CAPTIONS AND PATTERN--BASIC BIBLIOGRAPHIC UNIT", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb853-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-n (name=="Pattern note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-p (name=="Number of pieces per issuance", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-t (name=="Copy", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |= mrcb853-u (name=="Bibliographic units per next higher level", obsolete=="no", repeatable=="yes", value)
   |  |  |
   |  |  |- mrcb853-v (name=="Numbering continuity", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb853-w (name=="Frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-x (name=="Calendar change", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-y (name=="Regularity pattern", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb853-z (name=="Numbering scheme", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb853-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb853-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb853-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb854* (name=="CAPTIONS AND PATTERN--SUPPLEMENTARY MATERIAL", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb854-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-n (name=="Pattern note", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-o (name=="Type of supplementary material", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-p (name=="Number of pieces per issuance", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-t (name=="Copy", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-u (name=="Bibliographic units per next higher level", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb854-v (name=="Numbering continuity", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb854-w (name=="Frequency", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-x (name=="Calendar change", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-y (name=="Regularity pattern", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb854-z (name=="Numbering scheme", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb854-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb854-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb854-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  +- mrcb855* (name=="CAPTIONS AND PATTERN--INDEXES", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb855-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-n (name=="Pattern note", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-o (name=="Type of index", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-p (name=="Number of pieces per issuance", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-t (name=="Copy", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-u (name=="Bibliographic units per next higher level", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb855-v (name=="Numbering continuity", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb855-w (name=="Frequency", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-x (name=="Calendar change", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-y (name=="Regularity pattern", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb855-z (name=="Numbering scheme", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb855-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb855-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb855-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |
   |- mrcb-access?
   |  |
   |  +- mrcb856* (name=="ELECTRONIC LOCATION AND ACCESS", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb856-a (name=="Host name", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-b (name=="Access number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-c (name=="Compression information", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-d (name=="Path", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-f (name=="Electronic name", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-g (name=="Uniform resource name", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb856-h (name=="Processor of request", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-i (name=="Instruction", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-j (name=="Bits per second", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-k (name=="Password", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-l (name=="Logon", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-m (name=="Contact for access assistance", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-n (name=="Name of location of host", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-o (name=="Operating system", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-p (name=="Port", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-q (name=="Electronic format type ", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-r (name=="Settings", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-s (name=="File size", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-t (name=="Terminal emulation", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-u (name=="Uniform Resource Identifier", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-v (name=="Hours access method available", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-w (name=="Record control number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-y (name=="Link text ", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb856-2 (name=="Access method", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb856-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb856-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes ")
   |
   |- mrcb-enumeration-and-chron?
   |  |
   |  |- mrcb863* (name=="ENUMERATION AND CHRONOLOGY--BASIC BIBLIOGRAPHIC UNIT", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb863-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-n (name=="Converted Gregorian year", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-p (name=="Piece designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-q (name=="Piece physical condition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-s (name=="Copyright article-fee code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb863-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-w (name=="Break indicator", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb863-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb863-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb863-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb863-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb864* (name=="ENUMERATION AND CHRONOLOGY--SUPPLEMENTARY MATERIAL", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb864-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-n (name=="Converted Gregorian year", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-o (name=="Title of supplementary material", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-p (name=="Piece designation", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-q (name=="Piece physical condition", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-s (name=="Copyright article-fee code", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb864-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-w (name=="Break indicator", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb864-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb864-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb864-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb864-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  +- mrcb865* (name=="ENUMERATION AND CHRONOLOGY--INDEXES", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb865-a (name=="First level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-b (name=="Second level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-c (name=="Third level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-d (name=="Fourth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-e (name=="Fifth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-f (name=="Sixth level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-g (name=="Alternative numbering scheme, first level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-h (name=="Alternative numbering scheme, second level of enumeration", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-i (name=="First level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-j (name=="Second level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-k (name=="Third level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-l (name=="Fourth level of chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-m (name=="Alternative numbering scheme, chronology", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-n (name=="Converted Gregorian year", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-o (name=="Title of index", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-p (name=="Piece designation", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-q (name=="Piece physical condition", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-s (name=="Copyright article-fee code", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb865-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-w (name=="Break indicator", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb865-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb865-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb865-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb865-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |
   |- mrcb-textual-holdings?
   |  |
   |  |- mrcb866* (name=="TEXTUAL HOLDINGS--BASIC BIBLIOGRAPHIC UNIT", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb866-a (name=="Textual string", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb866-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb866-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb866-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb866-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  |- mrcb867* (name=="TEXTUAL HOLDINGS--SUPPLEMENTARY MATERIAL", obsolete=="no", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb867-a (name=="Textual holdings", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb867-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb867-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb867-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb867-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |  |
   |  +- mrcb868* (name=="TEXTUAL HOLDINGS--INDEXES", obsolete=="no", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb868-a (name=="Textual holdings", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb868-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb868-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb868-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb868-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="yes")
   |
   |- mrcb-variant-names?
   |  |
   |  |- mrcb870* (name=="VARIANT PERSONAL NAME", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb870-a (name=="Personal name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-b (name=="Numeration", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-c (name=="Titles and other words associated with a name", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-d (name=="Dates associated with a name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-j (name=="Tag and sequence number of the field for which 870 is a variant", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-n (name=="Number of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb870-q (name=="Fuller form of name", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb870-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb870-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb871* (name=="VARIANT CORPORATE NAME", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb871-a (name=="Corporate name or jurisdiction name as entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-b (name=="Subordinate unit", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-c (name=="Location of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-d (name=="Date of meeting or treaty signing", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-e (name=="Relator term", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-j (name=="Tag and sequence number of the field for which 871 is a variant", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-n (name=="Number of part/section/meeting", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb871-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb871-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb871-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  |- mrcb872* (name=="VARIANT CONFERENCE OR MEETING NAME", obsolete=="yes", repeatable=="yes", i1, i2)
   |  |  |
   |  |  |- mrcb872-a (name=="Meeting name or jurisdiction name as entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-b (name=="Number", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-c (name=="Location of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-d (name=="Date of meeting", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-e (name=="Subordinate unit", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-j (name=="Tag and sequence number of the field for which 872 is a variant", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-n (name=="Number of part/section/meeting", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  |- mrcb872-q (name=="Name of meeting following jurisdiction name entry element", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-u (name=="Affiliation", obsolete=="yes", repeatable=="no")
   |  |  |
   |  |  |- mrcb872-4 (name=="Relator code", obsolete=="yes", repeatable=="yes")
   |  |  |
   |  |  +- mrcb872-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |  |
   |  +- mrcb873* (name=="VARIANT UNIFORM TITLE HEADING", obsolete=="yes", repeatable=="yes", i1, i2)
   |     |
   |     |- mrcb873-a (name=="Uniform title", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-d (name=="Date of treaty signing", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-f (name=="Date of a work", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-g (name=="Miscellaneous information", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-h (name=="Medium", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-j (name=="Tag and sequence number of the field for which 873 is a variant", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-k (name=="Form subheading", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-l (name=="Language of a work", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-m (name=="Medium of performance for music", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-n (name=="Number of part/section of a work", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-o (name=="Arranged statement for music", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-p (name=="Name of part/section of a work", obsolete=="yes", repeatable=="yes")
   |     |
   |     |- mrcb873-r (name=="Key for music", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-s (name=="Version", obsolete=="yes", repeatable=="no")
   |     |
   |     |- mrcb873-t (name=="Title of a work", obsolete=="yes", repeatable=="no")
   |     |
   |     +- mrcb873-6 (name=="Linkage", obsolete=="yes", repeatable=="no")
   |
   |- mrcb-item-information?
   |  |
   |  |- mrcb876* (name=="ITEM INFORMATION--BASIC BIBLIOGRAPHIC UNIT", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb876-a (name=="Internal item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb876-b (name=="Invalid or canceled internal item number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-c (name=="Cost", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-d (name=="Date acquired", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-e (name=="Source of acquisition", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-h (name=="Use restrictions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-j (name=="Item status", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-l (name=="Temporary location", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-p (name=="Piece designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-r (name=="Invalid or canceled piece designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb876-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb876-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb876-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb876-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  |- mrcb877* (name=="ITEM INFORMATION--SUPPLEMENTARY MATERIAL", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |  |  |
   |  |  |- mrcb877-a (name=="Internal item number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb877-b (name=="Invalid or canceled internal item number", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-c (name=="Cost", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-d (name=="Date acquired", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-e (name=="Source of acquisition", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-h (name=="Use restrictions", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-j (name=="Item status", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-l (name=="Temporary location", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-p (name=="Piece designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-r (name=="Invalid or canceled piece designation", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb877-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |  |  |
   |  |  |- mrcb877-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  |- mrcb877-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |  |  |
   |  |  +- mrcb877-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |  |
   |  +- mrcb878* (name=="ITEM INFORMATION--INDEXES", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
   |     |
   |     |- mrcb878-a (name=="Internal item number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb878-b (name=="Invalid or canceled internal item number", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-c (name=="Cost", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-d (name=="Date acquired", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-e (name=="Source of acquisition", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-h (name=="Use restrictions", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-j (name=="Item status", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-l (name=="Temporary location", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-p (name=="Piece designation", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-r (name=="Invalid or canceled piece designation", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-t (name=="Copy number", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb878-x (name=="Nonpublic note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-z (name=="Public note", obsolete=="no", repeatable=="yes")
   |     |
   |     |- mrcb878-3 (name=="Materials specified", obsolete=="no", repeatable=="no")
   |     |
   |     |- mrcb878-6 (name=="Linkage", obsolete=="no", repeatable=="no")
   |     |
   |     +- mrcb878-8 (name=="Field link and sequence number", obsolete=="no", repeatable=="no")
   |
   +- mrcb-linkages?
      |
      |- mrcb880* (name=="ALTERNATE GRAPHIC REPRESENTATION", obsolete=="no", repeatable=="yes", i1, i2)
      |  |
      |  |- mrcb880-a (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-b (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-c (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-d (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-e (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-f (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-g (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-h (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-i (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-j (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-k (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-l (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-m (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-n (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-o (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-p (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-q (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-r (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-s (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-t (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-u (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-v (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-w (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-x (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-y (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-z (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-0 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-1 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-2 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-3 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-4 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-5 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-6 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-7 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb880-8 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |  |
      |  +- mrcb880-9 (name=="Same as associated field", obsolete=="no", repeatable=="yes")
      |
      |- mrcb886* (name=="FOREIGN MARC INFORMATION FIELD", obsolete=="no", repeatable=="yes", i1, i2="i2-blank")
      |  |
      |  |- mrcb886-a (name=="Tag of the foreign MARC field/Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-b (name=="Content of the foreign MARC field/Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-c (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-d (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-e (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-f (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-g (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-h (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-i (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-j (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-k (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-l (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-m (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-n (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-o (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-p (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-q (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-r (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-s (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-t (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-u (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-v (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-w (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-x (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-y (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-z (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-0 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-1 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-2 (name=="Source of data/Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-3 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-4 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-5 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-6 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-7 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  |- mrcb886-8 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |  |
      |  +- mrcb886-9 (name=="Foreign MARC subfield", obsolete=="no", repeatable=="yes")
      |
      +- mrcb887* (name=="NON-MARC INFORMATION FIELD", obsolete=="no", repeatable=="yes", i1="i1-blank", i2="i2-blank")
         |
         |- mrcb887-a (name=="Content of non-MARC field", obsolete=="no", repeatable=="no")
         |
         +- mrcb887-2 (name=="Source of data", obsolete=="no", repeatable=="no")

Tree representation of the MARC Bibliographic/Holdings/Community Information Record XML DTD (mrcbxmlfile.dtd) - generated using Matra 0.8.1b (http://matra.sourceforge.net/)

How to read the above tree?

Please check the article How to read the DTD Tree to learn how to read the above dtd tree generated by the Matra DTD Parser.

About MARC

MARC stands for "MAchine Readable Cataloging". It was developed by the Library of Congress.

"The MARC formats are standards for the representation and communication of bibliographic and related information in machine-readable form."

About Matra

Matra is a java based XML DTD parser utility. It is available from http://matra.sourceforge.net. It is freely available under the open-source MPL 1.1 license.