title: What dose the curly-brace and percent sign mean in html?
body: <p>I am learning how to develop website in Django framework. 
  There is something I don't understand about the template html file.</p>
  
  <p>I saw the tutorial used the curly-braces(<code>&lt;% if ... %&gt; &lt;% endif %&gt;</code> etc.) to embed logic in the code. But when I try to use this syntax in a non-Django server(Apache) this syntax was not interpreted and I can see my <code>&lt;% if ... %&gt;</code> ... right on my page. </p>
  
  <p>I dont know why this is.</p>
  
  <p>So this syntax is not a part if HTML but rather a part of Django so it can be interpreted by it?</p>