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    <p>I agree that <code>meta</code> would fit better than an empty <code>span</code>. However (even <em>if</em> you could use them in <code>body</code>), note that you can’t just use custom <code>meta</code> keywords. In HTML5, only <a href="https://stackoverflow.com/a/16207631/1591669">defined/registered values</a> are valid.</p> <p>But you can have <code>meta</code> elements in <code>body</code>, if they are used for Microdata or RDFa. For example, RDFa <a href="http://www.w3.org/TR/2013/REC-html-rdfa-20130822/#extensions-to-the-html5-syntax" rel="nofollow noreferrer">extends</a> HTML5:</p> <blockquote> <p>If the <code>@property</code> RDFa attribute is present on the <code>link</code> or <code>meta</code> elements, they MUST be viewed as conforming if used in the <code>body</code> of the document. More specifically, when <code>link</code> or <code>meta</code> elements contain the RDFa <code>@property</code> attribute and are used in the <code>body</code> of an HTML5 document, they MUST be considered flow content.</p> </blockquote> <p>So you could create (or reuse an existing) vocabulary for your metadata. But, depending on your use case, this might be overkill.</p> <p>As an alternative to <code>span</code> I’d <a href="https://stackoverflow.com/a/14428316/1591669">use the <code>script</code> element as data block</a>:</p> <blockquote> <p>The <code>script</code> element allows authors to include dynamic script and <strong>data blocks</strong> in their documents. The element does not represent content for the user.</p> </blockquote> <p>For example:</p> <pre><code>&lt;script type="text/plain"&gt; &lt;!-- or whichever MIME type suits your need --&gt; &lt;!-- your data --&gt; &lt;!-- you could of course use data-* attributs on this script element, too --&gt; &lt;/script&gt; </code></pre>
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    1. POMeta Tag in Body
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    1. COThe use of a `script` tag's interesting - never thought of using a non-`text/javascript` tag!
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