INT 10 - VIDEO - TANDY 2000 only - SCROLL LEFT PART OR ALL OF SCREEN            
	AH = 73h
	AL = number of columns to shift scroll area, 00h to clear entire area
	BH = new attributes for blanked columns at right
	CH,CL = row, column of upper left corner of scroll area
	DH,DL = row, column of lower right corner of scroll area
Return: nothing
SeeAlso: AH=06h,AH=07h,AH=72h"TANDY",INT 15/AH=12h/BH=05h
                                                                                

INT 10 - HUNTER 16 - SELECT TEXT FONT                                           
	AH = 73h
	AL = new font
	      00h  7x7 in a 8x8 cell
	      01h  5x7 in a 6x8 cell
	      06h  3x5 in a 4x6 cell
Return: BH = cell width
	BL = cell height
SeeAlso: AH=60h"HUNTER",AH=77h"HUNTER"