This page is a work in progress and will be updated in next
version.
Generation rules are an osm2xp feature that let you customize
what is generated by the software.
It's a very powerfull feature , yet very simple to use.
The concept is to link an openStreetMap tag with some xplane
objects (forests, 3d objects, facades).
This way, you can tell osm2xp to generate for example a church 3d
object each time the tag "amenit=place_of_worship" is encountered.
Generation rules panels let you export and import your settings
to xml files, so you can share them with other users.