INT 7B CR - AutoCAD Device Interface - PRINTER/PLOTTER - SEND PLOTTING DATA     
	AX = data length (0000h-7FFFh)
	CX:BX -> data to be plotted
	DX = vertical position of line on page
Return: nothing
Notes:	This interrupt is called by AutoCAD to perform its output
	A data length of 0000h indicates that a blank line is to be output
SeeAlso: AX=8001h,AX=8002h,INT 78"AutoCAD",INT 7A/AX=0001h"AutoCAD"