Release 10.1A: OpenEdge Development:
Progress 4GL Reference

&UNDEFINE preprocessor directive

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, Progress 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. This does not apply to non-globally (scoped) defined names.

See also

&GLOBAL-DEFINE preprocessor directive, &SCOPED-DEFINE preprocessor directive, DEFINED preprocessor function