[July 22nd 2008] The 'docs' directory contain various text files that should help you understand the most important parts of the code of MediaWiki. More in-depth documentation can be found at http://www.mediawiki.org/wiki/Manual:Code. API documentation is automatically generated and updated daily at: http://svn.wikimedia.org/doc/ You can get a fresh version using 'make doc' or mwdocgen.php in the ../maintenance/ directory. For end user / administrators, most of the documentation is located online at: http://www.mediawiki.org/wiki/Help:Contents http://www.mediawiki.org/wiki/Manual:Contents