title: Calling a route from a template
body: <p>Can I have a route that renders a template that I can use in another template?</p>
  
  <p>I imagine something like</p>
  
  <pre><code>@app.route('/tags/')
  def tags():
      return render_template('tags.html', tags=create_tags())
  </code></pre>
  
  <p>and then somehow invoke the route from a different template.</p>
  
  <pre><code>&lt;h2&gt;Tags&lt;/h2&gt;
  {{ render('/tags/') }}
  </code></pre>