This area contains several activities but with no clear goals to be completed or instructions. They are intended to let you practice with different test data without mucking up one of the main activities. There is limited validation in place here and importantly (if I've done it correctly!) nothing should persist and tests should only last for your session.

If your tests have caused a of a mess then click "Reset your session". Also if you want to play about with the same session as someone else, there's a link in the footer that can be used to join the same session as if you were sharing the same browser on a single computer!