INT 21 O - Novell NetWare, Alloy NTNX - LOG/LOCK RECORD (FCBsee File Control Block)
	AH = BFh
	AL = flags (see #01808)
	DS:DX -> opened FCBsee File Control Block (see #01345 at AH=0Fh)
	BX:CX = offset
	BP = lock timeout in timer ticks (1/18 sec) if AL nonzero
	SI:DI = length
Return: AL = error code (see #01807)
Note:	this function was added in NetWare 4.6, but was removed some time prior
	  to Advanced NetWare 2.15, and is no longer listed in current Novell
	  documentation
SeeAlso: AH=BCh,AH=C0h"NetWare",AH=C2h"NetWare"