Rationale offers us many sorts of basis boxes:
You'll find these under the 'basis boxes' pane below (or the column shaped icon, if you've lengthened this browser window).
If you change to the 'Basis Boxes' pane you'll need to click the 'Explore' pane to get this window back. Try switching between the two windows now.
© Austhink 2007. Rationale Exercises version 0.1, Sep-07
Note: these exercises are undergoing continual improvement. Next time you come back they might be a bit different.
Let us know what you think!