INT 31 P - CauseWay - "UnLockMemNear" - UNLOCK APP-RELATIVE MEMORY REGION AX = FF20h ESI = starting application-relative linear address ECX = size of region in bytes Return: CF clear if successful CF set on error Desc: allow memory to be 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 unlocked as well SeeAlso: AX=FF1Eh,AX=FF1Fh