title: How to read this tag, what language is it?
body: <p>I'm working on a website, that was done by someone else previously. Owner didn't end up with previous dev on a good terms and I cant contact him now with questions. </p>
  
  <p>For most of part, code is a regular PHP. However, in some places I see weird tags that I cant recognize. </p>
  
  <p>for example:</p>
  
  <pre><code>&lt;php:dropdownlist:ddlTypeOfResidence&gt;&lt;/php:dropdownlist:ddlTypeOfResidence&gt;
  </code></pre>
  
  <p>The code above, generates the dropdown with values. I don't understand how to read this tag, on the sidebar, they have the get a quote form, and I need to add this field on that sidebar form. I copy pasted the line given above, and it works only on pages, where the original form exists that includes that line as well. </p>
  
  <p>Example, page freeQuote has a form, and on that page on sidebar, get a free quote mini form is also displayed. On this page, input field gets the values dynamically, so that TAG works on this page... </p>
  
  <p>On the other pages, where the original full form is not loaded, this dropdown is still displayed on the sidebar mini form, however, the values are empty. </p>
  
  <p>Anyways, before everything else, I need to understand what language / tag is that, how to read it. </p>