/CLASS

   Compares the contents of two classes. If the particular generation
   of any element, that is a member of the class, differs between the
   classes, CMS creates a file that contains a listing of the class
   members that differ between them. If the contents of the classes
   are the same, CMS issues a message to that effect and does not create
   a differences file (unless the /FULL qualifier is in effect). The
   /CLASS qualifier must be specified prior to any other qualifiers.

      Format:

         DIFFERENCES/CLASS  class1 class2

Additional information available:

Command_Parameters              Description     Qualifiers
/APPEND         /FULL           /IGNORE=(keyword[,...])         /LOG (D)
/OCCLUDE[=option,...]           /OUTPUT[=file-specification]    /NOOUTPUT
/PARALLEL       /SHOW=(keyword[,...])           /WIDTH=n