Mediawiki

configuration settings
 * https://www.mediawiki.org/wiki/Manual:Configuration_settings#Special_pages

Database Schema
 * https://upload.wikimedia.org/wikipedia/commons/f/f7/MediaWiki_1.24.1_database_schema.svg

Special Pages
 * https://www.mediawiki.org/wiki/Manual:Special_pages
 * https://www.mediawiki.org/wiki/Help:Special_pages
 * https://www.mediawiki.org/wiki/Manual:Configuration_settings#Special_pages

tables.sql
 * https://phabricator.wikimedia.org/diffusion/MW/browse/master/maintenance/tables.sql

Tables
wiki table sortable

Extensions
see: https://meta.miraheze.org/wiki/Extensions

Keyboard Shortcuts
Common:
 * Alt+Shift+e: edit existing page
 * Alt+Shift+s: save existing page

https://en.wikipedia.org/w/index.php?title=Wikipedia:Keyboard_shortcuts/printable_quick_reference&printable=yes

This is the list of default shortcuts defined in core MediaWiki. The first column holds the name of the MediaWiki "message" for the action, and the second column holds the shortcut character. A blank value means that no shortcut key is defined for that action by default.