Press the green flag to start. Click on the cat to add, replace, or remove an item from the list. To add an item to the list, type "add." To replace an item from the list, type "replace" or "change." To remove an item from the list, type "remove" or "delete."
Notes: I made this project for a demonstration at CoderDojo Ireland. Every time you press the green flag again, the list clears. Credits: 100% created by me.