First of all, you'll need to have read the previous
tutor, about simple bumpmaps. Now I will introduce the transparency map. It's
actually really simple to understand this one. It just tells Bumpy Extreme
where to 'bump' and where to put the background color. A black pixel means
put down the background color and a white one means 'bump'. In addition to
the "transmap" parameter, you'll need the "background" parameter. You'll need
to fill in the hex color code of the background here.
