Article list and summaries

People asked, so I'm making it clear here. The articles in this section are licensed under the GNU Free Documentation Licence. All of them have a section similar to this one (WARNING: please read each of those carefully, they may be slightly different to this one):

Copyright © YEAR Bojan Smojver.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the licence is here