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a=GETX1(0) [area selection left edge]
Returns left edge of area selection rectangle.
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a=GETX2(0) [area selection right edge]
Returns right edge of area selection rectangle.
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a=GETY1(0) [area selection top edge]
Returns top edge of area selection rectangle.
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a=GETY2(0) [area selection bottom edge]
Returns bottom edge of area selection rectangle.
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a=GETLI(POS[0-3])
0=X1
1=Y1
2=X2
3=Y1
This function allows you to retrieve the two endpoints of a freehand area selection; that is, where you start drawing, and where you stop drawing.
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