<p>System plugins operate every time a page on your site loads. They control such things as your URLS, whether users can check a "remember me" box on the login module, and whether caching is enabled. New is the redirect plugin that together with the redirect component will assist you in managing changes in URLs.</p>
<p>Default on:</p>
<ul>
<li>Remember me <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_Remember_Me">Help</a></li>
<li>SEF <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_SEF">Help</a></li>
<li>Debug <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_Debug">Help</a></li>
</ul>
<p>Default off:</p>
<ul>
<li>Cache <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_Cache">Help</a></li>
<li>Log <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_Log">Help</a></li>
<li>Redirect <a href="https://help.joomla.org/proxy/index.php?option=com_help&amp;amp;keyref=Help31:Extensions_Plugin_Manager_Edit#System_-_Redirect">Help</a></li>
</ul>