The text read off it
[02.06.11]
[, ACTIVITY nn]
nn is a number between 1 and 99 that represents the relative activity (or usage) of this file with respect to other files. The loading-time program uses this information in the allocation of buffer areas to produce a more efficient object program.
[, CHECKC
CHECKF]
CHECKC specifies that a checkpoint will be written on the checkpoint file upon reel switch of this file. CHECKF specifies that a checkpoint will be written on this file upon reel switch; the file must be a labeled output file for this option to be operative. No check point will be written if neither option is exercised.
[, MULTI]
MULTI specifies a tape file which is contained in more than one tape reel. A single reel file is assumed if MULTI is not specified.
[, SEQ]
SEQ specifies that each block in the file contains a block sequence number which is to be checked by the I/O system. (see IOCS)
[, CKSUMS]
CKSUMS specifies that each block in the file carries a checksum of data in the block which is to be checked by the I/O system. (see IOCS).
[, {LABELS}] [, SERIAL 'ser.no'] [, REEL 'reel.no'] [, RETAIN days] [, {HIGH}]
{LABELN} {LOW }
LABELS specifies a file with a standard label, i.e., labels to be checked or written automatically by IOCS.
LABELN indicates the use of a non-standard label, i.e., a label of 14 words or less which is to be checked by the programmer using a linkage supplied by the FOR LABEL option of the Environment FILE card. Either LABELS or LABELN must be explicitly stated if labels are to be recognized by IOCS and acted upon in either a standard or non-standard fashion. If neither option is exercised the file is considered to be unlabeled.