The lunar image was produced by

 gforge -pow 1 -craters 1.5 2 -m 200 -type pg8 -seed 837421

and then using ImageMagick 3.6.3 to "emboss" the texture, and xv 3.1 
to crop off the resulting two-pixel border so the texture is still
(almost) tilable.

-john beale 8/24/95
