→Secrets: reverting header structure (no need to dumb it down like this)
# The only secret in this level is the area surrounding the exit switch. Therefore, it is impossible to exit the level without triggering the secret (unless you use the alternative exit switch described below).
# The northwest corner of the map has a secret alcove, housing a [[BFG 9000]] and an [[energy cell pack]], along with another exit switch. In single-player or coop, it is inaccessible; it is only opened when a deathmatch player spawns in that location. This is usually discovered when a player uses the <tt>iddt</tt> or idclip [[cheat code]]s. If a player enters the region through noclip cheat, it can be disabled safely because the wall can be opened from inside.