Printable D20

This a regular icosahedron built in one line in OpenSCAD using no libraries, and only the value of phi as an input. I made it into a D20 by generating and placing the numbers on the surface, all in one additional line (with TBuser's bitmap font module as an input: http://www.thingiverse.com/thing:2054 ). I also included a version with all twenties to satisfy Makerblock's challenge ( http://www.makerbot.com/blog/2011/09/29/openscad-challenge-regular-icosahedron/#comment-15998 ) and take home the imaginary prize for the most efficient/elegant solution (I only took on the challenge because I wanted to see how short a script I could write to do it).

I wanted to generate the numbers numerals myself, and I considered roman numerals, seven-segment numerals, and various binary encodings, but I ended up using the library because I realized that there just isn't (currently?) an elegant way to generate numbers in OpenSCAD (and I'll give my 9000 internet points to anyone who can convince me oth