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Notes
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Polygons belong to the tool being used to create them, but are associated with a window. For example, if you are using 2D Polygon Finder to create polygons in window 1, but quit 2D Polygon Finder without explicitly saving the polygons as a disk file, they are lost. However, if a polygon set is active (although perhaps not yet saved), other tools may access them.
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Another use for a set of polygons is in the creation of masks (see Cut Mask).
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