Optionally, the optical stylus is provided with driver software that communicates messages directly to an application program without affecting the normal mouse cursor. In an alternative embodiment that also uses little or no space, the indicia is printed on a mouse pad or other surface to provide tablet and stylus functionality to other kinds of personal computers as well. The sticker are thin enough to permit the notebook computer to be closed as usual. In the latter case, the stickers may be selected and positioned as desired by the end user. The notebook computer may be manufactured with the indicia in place or the indicia may be provided on adhesive stickers to be added to any notebook computer. ![]() These tool buttons are recognized by both human users and by the optical stylus, which causes the computer to respond with the appropriate drawing tool or mode. ![]() ![]() The indicia includes a sketch pad area that cooperates with the optical stylus to transmit X and Y coordinates to the computer. A notebook computer has tablet and stylus functionality and drawing tool selection functionality by providing indicia near the keyboard and by providing an optical stylus that can recognize the indicia.
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