Category: <b>video</b>
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<pre><b>INT 10 - VIDEO - SCROLL DOWN WINDOW</b>

	AH = 07h
	AL = number of lines by which to scroll down (00h=clear entire window)
	BH = attribute used to write blank lines at top of window
	CH,CL = row,column of window's upper left corner
	DH,DL = row,column of window's lower right corner
Return: nothing
Note:	affects only the currently active page (see AH=05h)
BUGS:	some implementations (including the original IBM PC) have a bug which
	  destroys BP
	the Trident TVGA8900CL (BIOS dated 1992/9/8) clears DS to 0000h when
	  scrolling in an SVGA mode (800x600 or higher)
SeeAlso: AH=06h,AH=12h"Tandy 2000",AH=72h,AH=73h,INT 50/AX=0014h
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