<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.zen-cart.com/showthread.php?193811-updated-to-1-5-(from-1-3-9)-now-define-pages-editor-not-loading-the-pages-to-edit&p=1111705>