+
+/**
+ * Extension functions for initialisation of skins. This is called somewhat earlier
+ * than $wgExtensionFunctions.
+ */
+$wgSkinExtensionFunctions = array();
+
+/**
+ * List of valid skin names.
+ * The key should be the name in all lower case, the value should be a display name.
+ * The default skins will be added later, by Skin::getSkinNames(). Use
+ * Skin::getSkinNames() as an accessor if you wish to have access to the full list.
+ */
+$wgValidSkinNames = array();
+
+/**
+ * Special page list.
+ * See the top of SpecialPage.php for documentation.
+ */
+$wgSpecialPages = array();
+
+/**
+ * Array mapping class names to filenames, for autoloading.
+ */
+$wgAutoloadClasses = array();
+