Format of NetWare "Close Mesage Pipe" request buffer:
Offset	Size	Description	)
 00h	WORD	length of following data (max 66h)
 02h	BYTE	07h (subfunction "Close Message Pipe")
 03h	BYTE	number of pipes to close (01h-64h)
 04h  N BYTEs	list of connection numbers
SeeAlso: #01830,#01833