/CROSS_REFERENCE[=(option[,...])]
  /NOCROSS_REFERENCE                 (D)

  Controls whether the source listing file includes a
  cross-reference listing.

  The /CROSS_REFERENCE qualifier has no effect unless you also
  specify the /LIST qualifier.

  You can select one or both of the following options:

  ALPHABETICAL    The  compiler sorts user-defined names in
                  alphabetical order and lists them with the source
                  program line numbers on which they appear.
                  /CROSS_REFERENCE=ALPHABETICAL is the equivalent
                  of /CROSS_REFERENCE.

  DECLARED        Produces a listing of user-defined names in order
                  of declaration.

  If you specify /CROSS_REFERENCE=(ALPHABETICAL, DECLARED), the
  compiler produces a listing of user-defined names in both
  alphabetical and declared order in the same compilation.

  In the listing file, the pound sign ( ) indicates the source line
  containing the definition of the user-defined name, while the
  asterisk (*) indicates a line on which the associated data item
  is modified.

  The default, /NOCROSS_REFERENCE, suppresses the cross-reference
  listing.