Category: <b>applications</b>
<p>
<pre><b>INT 1A - WORD PERFECT v5.0 Third Party Interface - INSTALLATION CHECK</b>

	AX = 3601h
Return: DS:SI = routine to monitor keyboard input, immediately preceded by the
		ASCIZ string "WPCORP\0"
Notes:	WordPerfect 5.0 will call this interrupt at start up to determine if a
	  third party product wants to interface with it.  The third party
	  product must intercept this interrupt and return the address of a
	  keyboard monitor routine.
	Before checking for keyboard input, and after every key entered by the
	  user, Word Perfect will call the routine whose address was provided
	  in DS:SI with the following parameters:
		Entry:	AX = key code or 0
			BX = WordPerfect state flag
		Exit:	AX = 0 or key code
			BX = 0 or segment address of buffer with key codes
	See the "WordPerfect 5.0 Developer's Toolkit" for further information.
SeeAlso: INT 16/AX=5500h
</pre>