886 FOREIGN MARC INFORMATION FIELD (R)Indicators First Type of field 0 Leader 1 Variable control fields (002-009) 2 Variable data fields (010-999) Second Undefined; contains a blank (^)Subfield Codes $a Tag of the foreign MARC field (NR) $b Content of the foreign MARC field (NR) $2 Source of data (NR) $a-z Foreign MARC subfield (R) $0-9 Foreign MARC subfield (R)