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Plug-ins are used to handle logins, text replacements, editors and other functions. In this video, we will look at how one of the core plug-ins generates functionality we're already using. Let's go to the Plugin Manager. It's located on the Extensions menu, Plugin Manager. This screen lists all the plug-ins available in the system. Plug-ins cover a wide variety of functionality. At the top we have Authentication plug-ins. If you wanted to, you can turn on the Gmail plug-in and people would be able to use their Gmail login and password to gain access to your site.
At the bottom of the page we have Search plug-ins. Search plug-ins help Joomla's core search component perform its job. We also have Editor plug-ins. Some of the Editor plug-ins provide WYSIWYG editors and others provide the buttons that we use at the bottom of the editor. We also have Content plug-ins. Content plug-ins look at the text in your article and do text replacements. Let's take a look at how one of the Content plug-ins is currently affecting one of the articles we already have in the system. Let's go to the front end.
Click on the Read more link for About John and Meredith. You'll notice that we have this Article Index and some article navigation. The article is currently split into several pieces. This functionality is currently being generated by a Content plug-in. Let's turn it off and see what happens. Go back to the backend. The table of contents functionality is currently being provided by the Page Break plug-in. Click the checkmark to disable this plug-in.
Now let's go back to the front end. Click Refresh. The table of contents is now gone. All of the content is now displayed in one page, and we now see these lines. These lines are horizontal rules with some code in them that define the table of contents. Let's turn the plug-in back on. Let's go back to the front-end. Click Refresh. The Article Index and article navigation reappear. Plug-ins handle much of Joomla's core functionality behind the scenes.
Not all plug-ins have a visible effect on the front end, but they're important for your site. More plug-ins written by the Joomla community are available for installation.
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