Compile the binopwk interface and enable event logging for all
   events:

        $ idl binopwk.idl -trace all

   Compile the binopwk interface and enable event logging for errors:

        $ idl binopwk.idl -trace errors

   Compile the binopwk interface, enabling event logging for all
   events as well as enabling the log manager interface:

        $ idl binopwk.idl -trace all -trace log_manager

   The event logger universal interface has the following DCL command
   equivalents:

        -trace all                      /TRACE=EVENTS=ALL
        -trace log_manager              /TRACE=LOG_MANAGER
        -trace all -trace log_manager   /TRACE=(LOG_MANAGER,EVENTS=ALL)
        -trace errors -trace calls      /TRACE=EVENTS=(ERRORS,CALLS)