Progress
Programming
Handbook
&UNDEFINE Directive
To remove the definition of a preprocessor name, you can undefine the name. This is the syntax for &UNDEFINE:
The preprocessor–name is the name you want to undefine.
When you use the &UNDEFINE directive, Progress warns you if the name you want to undefine was not previously defined. The &UNDEFINE directive undefines the most recently defined name within whose scope the &UNDEFINE directive resides. Once you undefine a name, you can redefine it.
The &UNDEFINE directive also undefines named include file arguments. For more information, see the "Arguments to Include Files" section.
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