/sys$common/syshlp/helplib.hlb CC, Messages, REDEF  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        This declaration contains a redefinition of "<name>".
                The previous declaration is at <location>.

 Description    This declaration has tried to redefine an identifier
                that was defined earlier.  This is not valid.

 User Action    Remove one of the definitions.