22.1.4 ENVIRONMENTS

A list of the possible environments that you may set a room to with an Orb of
Creation:

nowhere                     grasslands        swamp
chaos                       urban             tundra
constructed underground     hills             jungle
natural underground         river             ocean
forest                      path              garden
beach                       road              freshwater
desert                      valley            sewer

'Urban' is the environment to use for things like the normal interior of
houses and such.