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

  Copies the wide-character string source_str, including the
  terminating null character, into destination_str.

  Syntax:

       #include <wchar.h>

       wchar_t *wcscpy (wchar_t *destination_str, const wchar_t
       *source_str);