title: How to print context content in the template?
body: <p>How can I print or iterate over all the variables available in the context from the template code?</p>
  
  <p>I know about <code>{% debug %}</code> but it contains too much information. I'd just like to print variable names available in the current context.</p>
  
  <p>Is there a way to do this without writing custom tag?</p>