The maps rollout sums
up all different texture
maps. Almost all maps
can be accessed in the
basic parameters rollout
(the small squares next
to the parameters), but
some will appear only
here.
These are the last four
maps: bump, displace,
opacity and environment.
Bump allows you to ren-
der irregularities in the
surface by using a map.
Dark areas in the map
are ‘low’ areas, bright
areas are ‘high’ areas