The highest user level in Joomla. Members of this group have super user permissions throughout the site. If anything can be done in a Joomla installation, the super user can do it.

A collection of related articles. Sub-categories start at one organiza- tional level below categories. Since Joomla 1.6, you may have as many levels of sub-categories as you please (called nested categories).

Stands for Structured query language. The language used to create SQL queries to access and manipulate databases. Includes DDL (data-definition language that manages table and index structure) and DML (data manipulation lan- guage, the subset of SQL used to add,…

A split menu is where different levels of a single menu are displayed in two or more locations on a single web page. For example, a common requirement is for a menu of top-level items to appear at the top…

The process of optimizing your pages to give them high-ranking placement in the search results page of a search engine (SERP) - including Google, Bing, Yahoo and other search engines.

Search-engine friendly URLs. Refers to URLs that are descriptive in a way that search engines can understand. Normal Joomla! URLs look something like this: http://www.yoursite.org/index.php?option=com_content&view=section&id=3&Itemid=41 You can optionally have URLs display to look like static HTML pages like this: http://www.yoursite.org/faq.html…

Languages are perhaps the most basic and critical extension type. Languages are packaged as either a core language pack or an extension language pack. These packages consist of INI files which contain key/value pairs. These key/value pairs provide the translation…

An abbreviation for “Linux Apache MySQL Perl/PHP/Python.” These group of free and open source programs are used to run many dynamic websites. Most Joomla sites run with Apache and MySQL. All run with PHP. In addition, JavaScript is now an…

RSS (which stands for, among other things, Really Simple Syndication) that allows you to syndicate your site content. It defines an easy way to share and view headlines and content through newsfeeds. You can find RSS feeds in hundreds of…

Annually events for Joomla community organized around the world. Joomla.org has a brief list of major Joomla Day since its early days at http://docs.joomla.org/Joomla!_Days/History