Adds viewport meta for mobile in Customizer.

Appends ‘(Draft)’ to draft page titles in the privacy page dropdown so that unpublished content is obvious.

Displays the default admin color scheme picker (Used in user-edit.php).

Extracts strings from between the BEGIN and END markers in the .htaccess file.

Returns whether the server is running Apache with the mod_rewrite module loaded.

Returns whether the server supports URL rewriting.

Performs autosave with heartbeat.

Adds WordPress rewrite rule to the IIS 7+ configuration file.

Deletes WordPress rewrite rule from web.config file if it exists there.

Checks if rewrite rule for WordPress already exists in the IIS 7+ configuration file.