PURGE            Delete Macro Definition                       MASM Directive

PURGE     macroname,,,

Deletes one or more macro definitions, freeing up memory.

Notes:     If a call is made to a macro that has been PURGEd, then
an error is generated.

There is no need to PURGE a macro when you wish to
redefine it.  By redefining it, the old macro definition
is automatically PURGEd.  A macro can PURGE itself by
making the last line of the macro the PURGE directive.

This directive can also be used to easily remove macros
not needed from a macro library.

If the macroname is a directive or instruction mnemonic,
the directive or instruction mnemonic is restored to its
original value.

PURGE Delete Macro Definition