This allows you to create a list while the project is still running! However, it cannot process infinite lists because of scratches clone limitations. The lists also vanish once the project is turned off due to the fact that clones are deleted when the stop sign or green flag is hit. There are notes located in the project which will teach you how to use these scripts.
All credit to me for discovering this AMAZING (If I do say so myself) concept of creating lists in game!