|A key for informal features that are not intentionally planned or formally set up|
|Used on these elements|
|Status: In use|
|Tools for this tag|
This key is used as an attribute to describe that a feature has not been intentionally established, but rather evolved. At the moment it is mainly used in conjunction with footways and paths, but it could also be used with any other kind of feature. Informal footways or paths are also known as Desire paths.
Features tagged as informal=yes could be completely unmaintained and could be considered with lower priority by routers.