The MACID operand

The MACID operand enables the user to define the second through fourth characters of the names in a parameter list. Those macro expansions in which a MACID can be specified are indicated in the “General” section of each macro description. The option of entering an arbitrary three-letter string is indicated by MACID=macid in the macro call format.

For further information on the MF, PREFIX, PARAM and MACID operands, see the manual “Executive Macros” [4].