non-text-content.html

<dt><dfn id="dfn-non-text-content">non-text content</dfn></dt>
<dd>
   
   <p>any content that is not a sequence of characters that can be <a>programmatically determined</a> or where the sequence is not expressing something in <a>human language</a></p>
   
   <p class="note">This includes <a>ASCII art</a> (which is a pattern of characters), emoticons, leetspeak (which uses character substitution),
      and images representing text
   </p>
   
</dd>