OBJNUM sender()
This function returns the objnum of the object which called the current method. If the current method was called by the driver, zero (0) is returned instead. Further information can be found in the section Tasks and Frames.
atomic() | caller() | cancel() | definer() | method() | pause() | refresh() | resume() | sender() | stack() | suspend() | task_id() | tasks() | this() | tick() | ticks_left() | set_user() | user() | pass() | task_info() | call_trace() | debug_callers()