Overview of the subcodes

The subcodes can only be specified for specific subroutine functions. They are specified in the SUBCODE field of the control block CB. If no subcode is specified, the SUBCODE field in control block CB must be set to blank (X’40’ / UNUSE).

The subcodes determine:

• the output format of members

• how records and members are read or written

• control of version automation.

The following functions have a subcode:

TOCPRIM, TOCSEC, GET, CLOSE, LST, ADD, COPY, OPENGET, OPENPUT, PROVIDE, REN, RETURN and COPYLIB.

The table below shows all subcodes, their meanings and how they are assigned to the respective subroutine functions.

Subcode	Meaning	Function
SHORT	Output format:
	Outputs member name and storage mode.	TOCPRIM
	Outputs member name, secondary name, secondary attribute and storage mode.	TOCSEC
LONG	Extended output format:
	Outputs user, creation and modification dates and times, CCS name, protection attributes, borrowing privileges, member state, holder and access stamp in addition to member name and storage mode.	TOCPRIM
	Outputs user, creation, and modification dates and times, secondary name and secondary attribute, CCS name, protection attributes, borrowing privileges, member state, holder and access stamp in addition to member name and storage mode.	TOCSEC
DIR	Direct reading of a record: Outputs the record identified by RECORD-TYPE and RECORD-NR in control block RD.	GET
SEQ	Sequential reading of a record: Outputs next the record that has the same access path identification as the last GET call.
WRITE	Write output member back: Writes the last member state back into the library.	CLOSE
RESET	Discard output member: Discards the member state last written.
SYM	Display mode of a record: Represents the records depending on the member type.	LST
HEX	Display mode of a record: Outputs the record character by character and in hexadecimal form (superimposed).
INCP	Version automation: Increments with prefix	ADD COPY OPENPUT PROVIDE REN RETURN
INCB	Version automation: Increments with base
HIGP	Version automation: Overwrites the member with the highest version in the prefix
UNUSE	All versions are specified explicitly
EXTRA	Opens a member for reading irrespective of the existence of format B records	OPENGET
UNUSE	For future extensions	All as yet unnamed functions