INT 15 - TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "START" - START TASK
	AX = 101Eh
	ES = segment of object handle for task to be started
	    (== handle of main window for that task)
Return: indicated task is started up again
Note:	once a task has been started, additional "START"s are ignored
SeeAlso: AX=101Dh,AX=102Bh,INT 21/AH=82h