The search component uses plugins to control which parts of your Joomla! site are searched. You may choose to turn off some areas to improve performance or for other reasons. Many third party Joomla! extensions have search plugins that extend where search takes place.
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The Parks sample site is designed as a simple site that can be routinely updated from the front end of Joomla!.
As a site, it is largely focused on a blog which can be updated using the front end article submission.
New weblinks can also be added through the front end.
A simple image gallery uses com_content with thumbnails displayed in a blog layout and full size images shown in article layout.