INT 2F - NETWORK - SET NETWORK EVENT POSTsee Power-On Self-Test HANDLER
	AX = B804h
	CX = (10NET) 0370h if 10Windows is hooking post handler
	ES:BX -> new event post handler (see #02981)
Notes:	used in conjunction with AX=B803h to hook into the network event post
	  routine
	this function is supported by PCIBM PC LAN Program, 10NET v5.0,
	  NetSoft DOS-NET v1.20+
	The specified handler is called on any network event.  Two events are
	  defined: message received and critical network error.
SeeAlso: AX=B800h,AX=B803h,AX=B904h


(Table 02981)
Values network post routine is called with:
	AX = 0000h single block message
	    DS:SI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. originator name
	    DS:DI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. destination name
	    ES:BX -> text header (see #02982)
	AX = 0001h start multiple message block
	    CX = block group ID
	    DS:SI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. originator name
	    DS:DI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. destination name
	AX = 0002h multiple block text
	    CX = block group ID
	    ES:BX -> text header (see #02982)
	AX = 0003h end multiple block message
	    CX = block group ID
	AX = 0004h message aborted due to error
	    CX = block group ID
	AX = 0101h server received badly formatted network request
	    Return: AX = FFFFh (PCIBM PC LAN will process error)
	AX = 0102h unexpected network error
	    ES:BX -> NCBsee Network Control Block (see #03249 at INT 5C"NetBIOSOne of a number of low-level device-independent network interfaces; the other major interfaces are Novell's IPX and the Internet's IP (Internet Protocol, the lower-level portion of TCP/IP).")
	AX = 0103h server received INT 24 error
	    other registers as for INT 24, except AH is in BH
	    Return: as below, but only 0000h and FFFFh allowed
Return: AX = response code
	    0000h user post routine processed message
	    0001h PCIBM PC LAN will process message, but message window not displayed
	    FFFFh PCIBM PC LAN will process message


Format of text header:
Offset	Size	Description	(Table 02982)
 00h	WORD	length of text (maximum 512 bytes)
 02h  N BYTEs	text of message
Note:	all CRLF sequences in message text are replaced by 14h; all other
	  values below 20h (space) are reserved