Displays the difference file. The default is to state whether
   output files (benchmark, difference, and result files) exist. If
   the benchmark file exists, its file specification is displayed.

   For a noninteractive test, Digital Test Manager displays the
   difference file. For an interactive test, Digital Test Manager
   displays the benchmark and result files screen by screen with
   differences marked and provides you with a keypad for manipulating
   the files.

   If you include a comparison status qualifier with the /DIFFERENCES
   qualifier, Digital Test Manager displays the difference file for
   result descriptions with the specified comparison status.