→ http://sdfphd.net/a/doku.php?id=thisis
A version of the geometric drawing scripting system called thisis has been used to produce the glyphic image files used on this website. For example the (somewhat arbirary) glyph at the top of this page is created by the following script:
// ====== thisis ====== put x at 0 0 put z at 0 1 put a on z around x at 60 deg put b on z around x at 120 deg put c on x to a at 50 % set pensize 12 draw c around x set pensize 6 draw b to x // draw x to a put y at 0.1 0.1 put u at 0.8 0.1 put h at 0.1 0.8 put j at 0.8 0.8 set pensize 3 draw u to y draw y to h draw h to j draw j to u set pensize 2 set dotsize 5 draw a .x