Function:     DescheduleHerevent

Purpose:      De-register a function registered previously by ScheduleHerevent.

Category:     SYSTEM

File:         herevents.c

Author:       J.P. Terlouw

Use:          DescheduleHerevent(&id);
              ident id  -  registration identification code.

Description:  The function associated with 'id' is descheduled and 'id' is
              set to zero. (Note that the argument is a pointer to 'id'.)

Related Doc:  ScheduleHerevent.dc3

Updates:      Apr  8, 1997: JPT, Document created.