A bookmark where you can save a point in your code, and you will be able to return to it any time later. This can be helpful when dealing with a large portion of code, such as a game, or a bot.
Sounds like a good idea, but couldn’t you just use separate files?
Say you’re making a RPG. Instead of having to “bookmark” points in the file, have seperate files for the fighting system, animations, random generation, etc…