Updates the IIS web.config file with the current rules if it is writable.

Inserts an array of strings into a file (.htaccess), placing it between BEGIN and END markers.

Updates the htaccess file with the current rules if it is writable.

Saves the XML document into a file.

Saves option for number of rows when listing posts, pages, comments, etc.

Displays the given administration message.

Flushes rewrite rules if siteurl, home or page_on_front changed.

Sends a confirmation request email when a change of site admin email address is attempted.

Updates the “recently-edited” file for the plugin or theme file editor.

Removes single-use URL parameters and create canonical link based on new URL.