...
C. Holdings record fields [hotlink]
...
A. Fixed fields Anchor A A
Leader
Record status: n
...
Modified Record: [blank]
Cataloging Source: d
...
B. Variable fields [_ used to denote blank indicators; bolded fields are required if applicable] Anchor B B
...
655_7 Form/genre (with $2 aat or $2 rbgenr at end, depending on whether the term you're using comes from the Art & Architecture Thesaurus or from RBMS Genre Terms)
...
C. Holdings record fields [omit any subfields you don’t have information for; bolded fields are required if applicable] Anchor C C
...