/DEBUG[=(option[,...])]
     /DEBUG=(TRACEBACK,NOSYMBOLS) (D)
     /NODEBUG

  Includes information in the object module for use by the OpenVMS
  Debugger.  You can select the following options:

  ALL            Includes all possible debugging information.

                 On Alpha systems, /DEBUG=ALL is equivalent to
                 /DEBUG=(TRACEBACK,SYMBOLS).

                 On VAX systems, /DEBUG=ALL is equivalent to
                 /DEBUG=(TRACEBACK,SYMBOLS,INLINE).

  NONE           Excludes any debugging information.

  NOSYMBOLS      Suppresses generation of symbol table records.

  SYMBOLS        Generates symbol table records.

  NOTRACEBACK    Suppresses generation of traceback records.

  TRACEBACK      Generates traceback records.

  Specifying /DEBUG with no options is equivalent to specifying
  /DEBUG=ALL.

  If the /DEBUG qualifier is not specified, the default is
  /DEBUG=(TRACEBACK,NOSYMBOLS).