The two horizontal coordinates are given to a very high accuracy, and the vertical coordinate is given as one of four values; touching, between 0 ... the right-hand side of the screen where the origin is at the lower left-hand corner of the board and the increment is one unit for each grid line. ... When the pen is depressed anywhere in this square, the picture enlarges until the pen is lifted. ... These two boxes and the cross-hairs make it very quick and easy to view any portion of the boardanbsp;...
|Title||:||Papers and Presentations|
|Author||:||Digital Equipment Computer Users Society|