Extensions are additions to the MediaWiki code that perform special functions.
The GeSHi syntax-highlighter extension has been installed on this wiki. For PHP code use <source lang="php">Your PHP code here</source>.
For HTML code use <source lang="html4strict">Your HTML markup here</source>.
etc. IF you add an invalid lang name, you'll presented with a list of supported "languages".
For example, inserting the following in your wiki page:
<source lang="php"> <?php echo "Hello World\n"; ?> </source>
will result in:
<?php echo "Hello World\n"; ?>
<html lang="en"> <head> <title>Joomla! Documentation</title> <link rel="StyleSheet" href="doccamp.css" type="text/css" media="screen,projection" /> </head> <body class="foo"> ... </body> </html>
In your article or tutorial you may want to add external links but they may clutter the text and reduce readability. In order to add a reference enclose the text in a ref element: <ref>your reference entry</ref>. At the end of the page add <references /> to display a list of all ref entries.
You found a URL used in an article is broken and want to fix it? No problem, hit edit and make the changes. But what if that URL is also used someplace else or in a whole series or pages? The wiki doesn't provide a global search and replace facility and using the standard search function can be tedious and even unsuccessful. Head over to this Special page, type in the bogous URL and find every article that contains the external link: Special:Linksearch