(set: $hasKey to false) You see a box. You want to open it [[open the box->open]] The box has a lock. You need a key. (if: $hasKey is true)[ You have a key! You can open the box [[open the box with your key->success]] ](else: )[ You can't open the box. You don't have a key Maybe you should look for one [[Look for a key->fail]] ]You opened the box with your key. [[start over->start]](set: $hasKey to true) Hey look! Here's a key! [[try again to open the box->open]]