INT 2A - NETWORK - END DOS CRITICAL SECTION
AH = 81h
AL = critical section number (00h-0Fh) (see AH=80h)
Notes:  normally hooked rather than called
the handler should reawaken any tasks which were suspended due to an
attempt to enter the specified critical section
SeeAlso: AH=82h,AH=87h

See also: 2A80

2A81 - NETWORK - END DOS CRITICAL SECTION