[Generate Only] button. Option to generate the world but not to load it. [title screen -> singleplayer -> create a new world -> more world options -> [generate only: On]]. Simply the game will create the world but when the game done you will be send to the title screen. The idea is not to generate chunks also to help to create a test world.
This is just an extra, You already able to generate a world and delete the chunks. This also can save a bit of time because the computer does not need to load new chunks. The only time is very useful and not super technical is when you want to add a data pack, beside that it is, as i said, just an extra.
Please sign in to leave a comment.