INT 21 - Novell NetWare - SYNCHRONIZATION SERVICES - RELEASE PHYSICAL RECORD
        AH = BDh
        BX = file handle
        CX:DX = starting offset in file
        SI:DI = length of record
Return: AL = status
            00h successful
            FFh record not locked
Desc:   unlock the specified physical record but do not remove it from log
          table
Note:   this function is supported by NetWare 4.6+, Advanced NetWare 1.0+, and
          Alloy NTNX
SeeAlso: AH=BEh"NetWare",AH=C0h,AH=C3h,AH=D2h