Category: <b>non-traditional input devices</b>
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<pre><b>INT 15 - HP OmniShare - Pen Driver - REPORT PEN CONTROL AREA EVENT</b>

	AX = BA10h
	BL = event
	   00h the pen left control areas
	   01h the pen entered the Brightness- area
	   02h the pen entered the Brightness+ area
	   03h the pen entered the Contrast- area
	   04h the pen entered the Contrast+ area
Return: CF clear if successfully processed
	CF set on error (function not supported, ie. not an OmniShare BIOS)
Note:	The pen driver is responsible for detecting when the pen enters and
	  leaves control areas of the OmniShare tablet, and notifying the BIOS.
	The BIOS manages the events, including the autorepetition, and sets
	  the status LEDs.
SeeAlso: AX=BA20h,AX=BA13h
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