model-isvalid.html

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<!DOCTYPE html>

<html>

<head>

  <meta charset=utf-8>

  <title>&lt;h6&gt;</title>

</head>

<body>

  <!-- is block -->

  <h6 class="class" id="id" lang="en">text</h6>

  <!-- can contain strictly inline -->

  <h6>text <em>elem</em></h6>

  <!-- can contain interactive -->

  <h6><a>text</a></h6>

</body>

</html>