Category: <b>DOS kernel</b>
<br>Flags: Undocumented function<p>
<pre><b>INT 21 - DOS 4.0+ - DETERMINE IF CHARACTER REPRESENTS YES/NO RESPONSE</b>

	AX = 6523h
	DL = character
	DH = second character of double-byte character (if applicable)
Return: CF set on error
	CF clear if successful
	    AX = type
		00h no
		01h yes
		02h neither yes nor no
Note:	supported by Novell DOS 7, though prior to Update 14, the results
	  depended on the kernel variant rather than the YESCHAR= or COUNTRY=
	  setting in CONFIG.SYS
BUG:	Novell DOS commands and tools all use internal settings rather than
	  this function, so the Yes/No responses are dependent on the specific
	  country's variant being run rather than on the COUNTRY= setting
</pre>