->
 </tr>
 
 <tr>
  <td><a href="#json-schema">JSON Schema</a></td>
  <td></td> <!-- XML -->
  <td><img src="assets/images/tick.png"/></td> <!-- JSON -->
  <td></td> <!-- RDF -->
  <td><img src="assets/images/tick.png"/></td> <!-- Structure -->
  <td><img src="assets/images/tick.png"/></td> <!-- Cardinality -->
  <td><img src="assets/images/tick.png"/></td> <!-- Values -->
  <td></td> <!-- Bindings -->
  <td></td> <!-- Invariants -->
  <td><img src="assets/images/tick.png"/><sup><b>2</b></sup><