1. Select some text in SimpleText; drag to desktop

2. Select some more text in SimpleText, drag to desktop

3. Go to the desktop and open the first clipping

4. Press command-up arrow

5. Press the arrow button that allows you to select the other clipping without clicking

6. Press command-down arrow to open it (so you have 2 clipping windows open)

7. Press command-up arrow and do the same manoeuvre to open the other clipping.

8. Don't ask me how I found it...