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Joomla! can be extended via the use of "Extensions". These extensions fall into three categories: Components, Modules, and Plugins. Modules are a larger 'catch all' than components. Where components add functionality to the Joomla! core framework, modules add functionality that allows the user to interact with parts of the system. Other types of modules are those that can 'contain' code or images within your site. This article covers the installation, creation and management of modules. Occasionally, you will need to enable, disable, or uninstall a module. This step is simple and is covered in a brief recipe.

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