This window lets you manage 3D objects used by osm2xp.
It's composed of 3 sections :

The facades rules section is one of the place of osm2xp where you
can create advanced generation rules.
In this section, you can choose a tag, and link some objects files
and an angle (or a random one) to this tag.
It will let you place a specific 3d objects for some
speciflandmarks , like a wind turbine, or a lighthouse for
exemple.

