INT 21 - Novell NetWare shell 3.01 - TASK MODE CONTROL                          
	AH = B5h
	AL = subfunction
	    03h get task mode
		Return: AH = 00h
			AL = current task mode byte (see #01803)
	    04h get task mode pointer
		Return: ES:BX -> task mode byte
Notes:	the task mode byte specifies how task cleanup should be performed, but
	  is declared to be version-dependent
	allows a program to disable the automatic cleanup for programs managing
	  task swapping, etc.


(Table 01803)
Values for NetWare task mode byte in version 3.01:
 00h-03h reserved
 04h	 no task cleanup