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

 Message        Line number is greater than the 32767 specified by
                the C standard and might not be portable.

 Description    A #line preprocessing directive specified a line
                value that is greater than 32767.  While the value is
                supported by Compaq C, the C89 standard specifies
                that the value must not be greater than 32767.
                Therefore, this program does not conform to the C89
                standard, and the directive might not be accepted by
                other C compilers.

 User Action    Be aware of this if you wish to port the program.