Record format (RECFM)

You can specify the following formats for variable-length records:
V
Variable-length, unblocked
VA
Variable-length, ASA print control characters, unblocked
VB
Variable-length, blocked
VM
Variable-length, machine print-control codes, unblocked
VS
Variable-length, unblocked, spanned
VBA
Variable-length, blocked, ASA print control characters
VBM
Variable-length, blocked, machine print-control codes
VBS
Variable-length, blocked, spanned
VSA
Variable-length, spanned, ASA print control characters
VSM
Variable-length, spanned, machine print-control codes
VBSA
Variable-length, blocked, spanned, ASA print control characters
VBSM
Variable-length, blocked, spanned, machine print-control codes
Note: In general, all references in this guide to files with record format VB also refer to VBM and VBA. The specific behavior of ASA files (such as VBA) is explained in Using ASA text files.

V-format signifies unblocked variable-length records. Each record is treated as a block containing only one record.

VB-format signifies blocked variable-length records. Each block contains as many complete records as it can accommodate.