Drag 2D and 3D shapes onto the main screen from the dock at the bottom. Click into a shape and use the square boxes to resize the shape, or the round boxes to rotate the shape. You can also re-colour the shape by clicking on the coloured square at the bottom left of the screen. To arrange the shapes in relation to one another, you can choose the ‘Bring to front’ or ‘Send to back’ buttons. You can add as many shapes to the screen as you like.

Any unwanted shapes can be dragged into the bin, or you can click ‘clear all’ to remove all shapes.

You can add sets to the screen by clicking ‘Add set’. Click into the set and use the square boxes to resize the set, or the round boxes to rotate the set. Click the set label to rename the set and hit ‘update’ when you have renamed it. You can add as many sets to the screen as you like.

Clicking Reset undoes any changes you have made, returning the tool to its default state.