MediaWiki
Introduction
This wiki is powered by MediaWiki. You can see that logo on the bottom right of the screen. This is the framework that spun off from Wikipedia. It's a powerful tool that allows users to edit and create pages quickly without having to deal with HTML. As someone who works with HTML as a job, that knowing HTML doesn't mean it is the most efficient way to get content onto a web page. This MediaWiki is a fast way to get content on a web page.
Extensions
Base MediaWiki is very feature rich. Extensions that were already included but just needed to be enabled were citations (with Cite), syntax highlighting (with SyntaxHighlight), and a fancier editor with quick preview support (with WikiEditor).
Extensions that I used which had to be installed were breadcrumbs, the kind that marks where you were (with JSBreadCrumbs).
Hidden
Unlisted would probably be a better name, but I implemented a way for pages to not show up in searches. These pages are not inaccessible but can only be accessible with a direct link. To do so, you can create a page with the namespace hidden in front of it. Easiest way to do so is go to your user page and add to your page Hidden:Page_Name replacing Page_Name with the name of your page, and save it.
Code added to the LocalSettings.php was the following:
define("NS_HIDDEN",3000);
define("NS_HIDDEN_TALK",3001);
$wgExtraNamespaces[NS_HIDDEN] = "Hidden";
$wgExtraNamespaces[NS_HIDDEN_TALK] = "Hidden_talk";
$wgNamespacesToBeSearchedDefault[NS_HIDDEN] = false;
$wgNamespacesToBeSearchedDefault[NS_HIDDEN] = false;