Undefines a compile-time constant (preprocessor name).
Syntax
&UNDEFINE preprocessor-name
preprocessor-name
The preprocessor name (compile-time constant) that you want
to undefine.
Notes
When
you use the &UNDEFINE directive, ABL warns you if the name you
want to undefine was not previously defined.
The &UNDEFINE directive undefines the currently active name.
It also undefines named include file arguments.
To globally define the same name more than once, use this directive to
undefine the name before redefining it. If you do not undefine the global
name before redefining it, the compiler produces a warning message
for non-globally (scoped) defined names. For globally defined names,
&UNDEFINE is optional, but recommended for code readability. If
&UNDEFINE is not used, the last &GLOBAL-DEFINE statement
is used.
