Category: <b>DOS extenders</b>
<br>Flags: available only in protected mode<p>
<pre><b>INT 31 - CauseWay - "LockMemNear" - LOCK APPLICATION-RELATIVE MEMORY REGION</b>

	AX = FF1Fh
	ESI = starting application-relative linear address
	EBX = size of region in bytes
Return: CF clear if successful
	CF set on error
Desc:	prevent memory from being swapped out by the virtual memory manager
Note:	locks are applied on 4K page boundaries, so memory above and below
	  the specified region may be locked as well
SeeAlso: AX=FF1Ch,AX=FF20h
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