Category: <b>MS Windows</b>
<br>Flags: callout or callback (usually hooked rather than called)<p>
<pre><b>INT 6F - MS Windows 3.0 - DOS APPLICATION SWITCH HOOK</b>

	AX = 0204h
Return: AX = status
	    0000h switch is allowed
	    other switch not allowed
Note:	intercepting this call will allow a DOS application to ensure that
	  Windows will not switch away from it.
</pre>