title: Which unit of measurement is used in this Office Open XML Element
body: <p>The following element is a pic, it can be parsed by PowerPoint. I got confused with it's
  measuring units  for a couple of hours. </p>
  
  <p>English Metric units (EMUs), points, picas, and inches ?</p>
  
  <p><strong>DPI=96</strong>
        xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main"
        xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"</p>
  
  <pre><code> &lt;p:pic&gt;
    ....
      &lt;a:srcRect l="5556"/&gt;
  
    &lt;p:spPr bwMode="auto"&gt;
      &lt;a:xfrm&gt;
        &lt;a:off x="3545" y="759"/&gt;
        &lt;a:ext cx="782" cy="150"/&gt;
      &lt;/a:xfrm&gt;
   .....
    &lt;/p:spPr&gt;
  &lt;/p:pic&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/Ta815.png" alt="enter image description here"></p>