This site is static (no PHP, Perl, ...), built by a Makefile from a heap of text files and m4 macros.
The top-left image is a piano interior from Wikimedia Commons. The icons in other pages come from KDE.
All pages should be XHTML 1.0 strict / CSS 2.0 compliant. If they are not, it is a bug, and please report it to me. You can validate the pages by clicking on the "XHTML 1.0 Strict" and "CSS 2.0" texts at the bottom.
