681 SUBJECT EXAMPLE TRACING NOTE (R)
Indicators First undefined; contains a blank (^) 0 No print constant required [OBSOLETE] 1 Example under/Example sous [OBSOLETE] 2 Note under/Note sous [OBSOLETE] 3 Example under reference from/Example sous le renvoi de [OBSOLETE] Second undefined; contains a blank (^)
Subfield Codes $a Subject heading or subdivision term (R) $i Explanatory text (R) $6 Linkage (NR) $8 Field link and sequence number (R)