The PURGE directive deletes the definition of a specified macro entry, letting you reuse space.
Syntax
PURGE Macro-Name[,...]Remarks
It is not necessary to purge a macro before redefining it. You may use PURGE to recover memory during assembly by deleting the contents of unreferenced macros. An Out of Memory condition can occur if a large, general-purpose macro library is included.
The directive:
PURGE MACRONAME
performs the same function as redefining the macro with no contents, as in:
MACRONAME MACRO
ENDM
In the following example, assume that MAC1 is a macro included in MACRO.LIB:
INCLUDE MACRO.LIB
PURGE MAC1
MAC1 ; Calls the purged macro
; but produces nothing