[Suggestion] PreviousAction element for UltraCustomizer

[TheRobLP]

What this would do is, when a certain event happens for example if you check when a user writes "cancel" in chat, it would make the Script go back to a previous element that is specifed, and will re-run the Script from there. Also, an idea which is related to this one, every element within a Script could get a unique "identifier" which makes it easier for users to know which element they are working with currently.