basically after a person publishes his map, he unlocks a button that enables the Replay mechanic
so if the creator enables Replay, then the people playing the level can press a button to see a ghost of the publisher beating the level to understand the level more easily, therefore it helps both the players who are beating the level and it also helps the mods check if it was cheated (the Replay mechanic can be turned on and off at any times in editor, but it's client-sided due to people trying to beat the level and others spawning a ghost publisher in front of him would be very annoying) (ghost publishers are transparent enough to look through but still see them) (the players can turn off their ghost publisher at any time they need)