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

  Copies a specified number of wide characters from one array to
  another, using a temporary array.

  Syntax:

        #include <wchar.h>

        wchar_t wmemmove (wchar_t *destination_str, const wchar_t
       *source_str, size_t n);