INT 6F - 10NET - SEND                                                           
	AH = 04h
	DS:BX -> send record (see #03758)
	DS:DX -> data (max 1024 bytes)
Return: CF clear if successful
	CF set on error
	    AX = error code (see #03740)
SeeAlso: AH=05h"10NET",AH=09h"10NET",AH=0Ah"10NET"


Format of 10NET send record:
Offset	Size	Description	(Table 03758)
 00h 12 BYTEs	receiving node's ID
		if first byte has high-order bit set, message is directed to
		  the CT_RGATE vector at the receiver
		if second byte is 00h, first byte is taken as a CB
		  channel number and delivered to all nodes on same channel
 0Ch	WORD	 length of data at DX