VMS Help CC, Messages, LONGEXTERN  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The external identifier name exceeds <number>
                characters; truncated to "<truncated spelling>".

 Description    The length of an identifier with external linkage
                exceeds the maximum allowed on this platform.  The
                name used in an output object file will be truncated
                to meet the platform restrictions.  Note that the
                debugger name will be unchanged.

 User Action    Reduce the size of the name.  On OpenVMS platforms
                the /NAMES=SHORTENED qualifier can also be used.
                When the qualifier is specified, the compiler will
                encode long external names instead of truncating
                them.