This tutorial will demonstrate a very simple rbox - giving the
basic editing instructions needed to get started with rbox effect.

Make a slant using a RBox

RCWedge will create a slant on the top only. A nice effect for
making walk ramps or a house roof.

RFWedge will create a slant on the bottom only. A nice effect
for making tunnels and other decore.

Using this method you can easily create very stable pits and
holes in your orb.

Tour of a sophisticate example using the RHOLE effect. Along
with a few tricks for editing. How to select multiple walls, and how
to select difficult to highlight walls.

Use this tutorial to create a vertical link between two domains
-- one over the top of the other.