# Dungeon feature
Dungeon features are objects which remain fixed on a single square and provide some more or less useful function.  Each square has one and exactly one feature. Some features are akin to terrain while some are like large objects that more or less take up the entire square.

&gt; &lt; Staircases
&gt; &lt; Ladders
_ Altars
# Sinks
{ ¶ Fountains
# Trees
^ Traps
+ - | Doors
. Doorways
- | Walls
# Drawbridges
# Iron bars
. Floor, usually in a room
# # Corridors
\ Thrones
| Graves
} Water
. Ice
} Lava
# Cloud
&nbsp; Air
&nbsp; Solid rock or unexplored part of the dungeon.