Allows selecting file from server disk.
The file type has one optional additional parameters ext. The parameter specifies the list of allowed file types (extensions).
<?$properties = Array( 'file' => Array( 'type' => 'file', 'value' => '', 'label' => 'Projetc file', 'ext' => 'doc|txt|xls' ));?>
The file type has File Manager assigned to it.