This is for acquisitions information, do not confuse it with the 949 field. Some of these codes 'explode' in the PAC display. In other words the code 'a' becomes App for Appendix, or the code 'b' becomes Bk for Book, etc. These codes must appear as the first character in the subfield followed immeadiately by the data that you want to display. The subfields used to transmit the coded data for these fields are d, e, f, and g.
Some samples follow.
This will appear as Ser. An item called Vol. Plates Will appear as Opus 23 v. 2 pt. 2 Plates Note in the above examples that you can use standard codes like v for volume, p for part along with nonstandard terms.