One-Shot Adventure Creation Needs an Undo Feature

It’s too easy to make a mistake and lose valuable work when dragging between paths and adventure nodes etc. You leave a node all by itself and it disappears!
An undo feature would prove to be a great boon.

Sometimes I’ve seen an orphaned node all by itself at the top. Maybe keep the most recent orphaned node near where they were working so they can just redraw the arrow between nodes and things are happy again if they make a mistake.