Valid WORKSTN File Operations

Table 55 shows the valid file operation codes for a WORKSTN file.

Table 55. Valid File Operation Codes for a WORKSTN File
File Description Specifications Positions Calculation Specifications Positions
17 18 26-35
I P/S CLOSE, ACQ, REL, NEXT, POST, FORCE
I P/S WRITE1, CLOSE, ACQ, REL, NEXT, POST, FORCE
I F READ, OPEN, CLOSE, ACQ, REL, NEXT, POST
C F READ, WRITE1, EXFMT2, OPEN, CLOSE, ACQ, REL, NEXT, POST, UPDATE3, CHAIN3, READC3
O Blank WRITE1, OPEN, CLOSE, ACQ, REL, POST
Notes:
  1. The WRITE operation is not valid for a program-described file used with a format name.
  2. If the EXFMT operation is used, the file must be externally described (an E in position 19 of the file description specifications).
  3. For subfile record formats, the UPDATE, CHAIN, and READC operations are also valid.

The following further explains the EXFMT, READ, and WRITE operation codes when used to process a WORKSTN file.


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