/sys$common/syshlp/helplib.hlb DTM, COMPARE, Command Qualifiers, /FULL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   For noninteractive and interactive terminal tests, the /FULL
   qualifier includes a complete listing of the text in the
   difference file that was identical and a listing of the
   differences encountered when the result file and benchmark file
   are compared.