Library /sys$common/syshlp/helplib.hlb

Library /sys$common/syshlp/helplib.hlb
CC, Messages, CANNOTUNDEF
^*Conan The Librarian

 Message        Cannot #undef a macro that is currently expanding.

 Description    The program is trying to #undef the same macro it is
                currently expanding.  The #undef will be ignored.

 User Action    Remove the #undef, or move it after the expansion of
                the macro.

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