Door

Doors are present in every level, their purpose is to send you to the next level, or end the level pack.

Settings

End Pack

Finishes the level pack, showing a Pack completed message, and verifying the pack.

Connected to

If the option End Pack is not enabled, this option will appear, a dropdown menu for the creator to select either an world or a room to go. Selecting a world will send the player to the first room of said world

Trivia

The Polymap file of world 12 room 10 is connected to !CREDITS, if you use polymap editing to change the door of an custom level to it, the credits will appear when you touch the door,but the level fixes itself on exit.

Levels don't count as beaten when you go through a door that sends you to the credits.