<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.zen-cart.com/showthread.php?210381-Admin-quot-alternative-navigation-quot-page-not-working-correctly&s=8297bb9960268b427553aa4dc9701b18&p=1273592>