$CLEAR_SYSTEM_EVENT

   On Alpha and I64 systems, removes one or more notification 
   requests previously established by a call to $SET_SYSTEM_EVENT.

   This service does not allow you to specify a handle and an
   event. You must pass a zero as one of these parameters. You can
   either clear by handle or request that all events for the user be
   cleared.

   Format

     SYS$CLEAR_SYSTEM_EVENT  [handle] ,[acmode] ,event

   C Prototype

     int sys$clear_system_event  (struct _generic_64 * handle,

                                 unsigned int acmode, unsigned int

                                 event);
 

Additional information available:

Arguments