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I am "drawing" shapes in the user area of display and want to erase all that I drew to-date. I set the variable ShapeKind to the type of curve, i.e. bezel, points or, if points, I set them all to zero and then issue "Invalidate". This erases the screen of any lines that I have drawn to-date. However, I was told to set ShapeKind but do not know how it is used or called within the "Invalidate" statement, any comments to Sid Kraft at sid_kraft@msn.com. Thanks:laugh: Sid