'ppt' => array('application/powerpoint', 'application/vnd.ms-powerpoint'),
'wbxml' => 'application/wbxml',
'wmlc' => 'application/wmlc',
'ppt' => array('application/powerpoint', 'application/vnd.ms-powerpoint'),
'wbxml' => 'application/wbxml',
'wmlc' => 'application/wmlc',