Category: <b>DOS extenders</b>
<br>Flags: available only in protected mode<p>
<pre><b>INT 31 - DPMI 0.9+ - FREE LDT DESCRIPTOR</b>

	AX = 0001h
	BX = selector to free
Return: CF clear if successful
	CF set on error
	    AX = error code (DPMI 1.0+) (8022h) (see <a href=../../it/43/31.html>#03143</a>)
Notes:	only one descriptor is freed per call
	the program's initial CS, DS, and SS descriptors may be freed
	(DPMI 1.0+) any segment registers containing the freed selector are
	  set to 0000h
	not supported by MS Windows 3.0 in Standard mode
SeeAlso: AX=0000h,AX=000Ah,AX=000Dh,INT 21/AX=3502h
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