rem: SetSemaphore (&GraphicsSem);
add: SetSemaphore (GraphicsSem);
context: EraseCoarseScan (void){	RECT r, tr;	extern FRAME SpaceJunkFrame;	SetSemaphore (&GraphicsSem);	SetContext (SpaceContext);	r.corner.x = (SIS_SCREEN_WIDTH >> 1) - (160 >> 1);	r.corner.y = 13 - 7;	r.extent.width = 160;	r.extent.height = 10;	RepairBackRect (&r);	GetFrameRect (SetAbsFrameIndex (SpaceJunkFrame, 20), &tr);	r = tr;	r.extent.width = 70;	RepairBackRect (&r);	r = tr;	r.corner.x += (r.extent.width - 70);	r.extent.width = 70;	RepairBackRect (&r);	ClearSemaphore (&GraphicsSem);}