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

 Message        <Context> the referenced type of the pointer value
                "<expression>" is "<type>", which is not compatible
                with "<target type>".

 Description    In a pointer assignment, the type pointed to by the
                source pointer is different than the type pointed to
                by the destination pointer.

 User Action    Correct the assignment to use compatible types.  This
                can be done by inserting a cast operand.