From Joomla! Documentation
The "API15" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
|ordering||Build the select list for Menu Ordering|
|linkoptions||Build the multiple select list for Menu Links/Pages|
jimport( 'joomla.html.html.menu' );