Dave—

This is PlayTime and ExperimentTime, so forget about any goal other than understanding stuff, okay?

Create different colored shapes, 5 will do, and overlap some of them with others.

Go to Window>control Bars, and then in the d'box, check the Arrange bar.

You can do all these functions when you select two or more overlapping shapes, this is from the Help file:

•Add shapes together.
•Or subtract the top shape from the other shapes.
•Or discard parts of other shapes not covered by the top shape.
•Or use the top shape to slice the other shapes

Yeah, you can go to Arrange>Combine shapes, but it's the tedious way to get things done.

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It's what I used until he Shapebuilder and Erase were invented and actually I still use Add and subtract almost daily.

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-g