Marching ants

This came up on stack overflow (*), might be interesting to some:

        (PolygonMorph
                vertices: Rectangle fromUser corners
                color: Color transparent
                borderWidth: 2
                borderColor: Color black)
                        dashedBorder: {10. 10. Color white. 0. 1};
                        openInHand

- Bert -

(*) http://stackoverflow.com/questions/12393970/
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