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. Â New in 1.6 is the redirect plugin that with the redirect component assist you in managing changes in URLs.
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Default off:
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Two new plugins are available in 1.6 but are disabled by default.
The users extension lets your site visitors register, login and logout, change their passwords and other information, and recover lost passwords. In the administrator it allows you to create, block and manage users and create user groups and access levels. Help
Please note that some of the user views will not display if you are not logged in to the site.
This module displays the list of weblinks in a category. Help
The Who's Online Module displays the number of Anonymous Users (e.g. Guests) and Registered Users (ones logged in) that are currently accessing the Web site. Help
This module shows an iFrame window to specified location. Help
News Feeds (com_newsfeeds) provides a way to organize and present news feeds. News feeds are a way that you present information from another site on your site. For example, the joomla.org website has numerous feeds that you an incorporate on your site. You an use menus to present a single feed, a list of feeds in a category, or or a list of all feed categories. Help
Components are larger extensions that produce the major content for your site. Each component has one or more "views" that control how content is displayed.In the Joomla! administrator there are additional extensions suce as Menus, Redirection, and the extension managers.
Modules are small blocks of content that can be displayed in positions on a web page. The menus on this site are displayed in modules. The core of Joomla! includes 17 separate modules ranging from login to search to random images. Each module has a name that starts mod_ but when it displays it has a title. In the descriptions in this section, the titles are the same as the names.
Content modules display article and other information from the content component.
User modules interact with the user system, allowing users to login, showing who is logged in, and showing the most recently registered users.
These modules display information from components other than content and user. These include weblinks, news feeds and the media manager.
Utility modules provide useful functionality such as search, syndication, and statistics.
Navigation modules help your visitors move through your site and find what they need.
Menus provide your site with structure and help your visitors navigate your site. Â Although they are all based on the same menu module, the variety of ways menus are used in the sample data show how flexible this module is.
A menu can range from extremely simple (for example the top menu or the menu for the Australian Parks sample site) to extremely complex (for example the About Joomla! menu with its many levels). They can also be used for other types of presentation such as the site map linked from the "This Site" menu.
Breadcrumbs provide users with information about where they are in a site.