rem: Signal((struct Task*) hook->h_Data, 1UL << amiga_clip_handle->cbh_SatisfyPort.mp_SigBit);
add: Signal((struct Task*) hook->h_Data, 1UL << amiga_clip_hooksignal);
context: static ULONG amiga_clip_hookfunc(struct Hook*        hook,				 APTR                object,				 struct ClipHookMsg* msg) {  if (msg->chm_Type == 0) {    // Ask main processing loop to call amiga_clip_handle_signals()    amiga_clip_announce = msg->chm_ClipID;    Signal((struct Task*) hook->h_Data,	   1UL << amiga_clip_handle->cbh_SatisfyPort.mp_SigBit);  }  return 0;}