title: How to debug elisp?
body: <p>Normally the easiest way to debug is using <code>printf</code>. What can I do to debug emacs-lisp? How can I print something to emacs editor from elisp? Or <em>is there any way to debug elisp code?</em></p>
  
  <p>For example, how can I check if the following code is run in <code>.emacs</code> file?</p>
  
  <pre><code>(load "auctex.el" nil t t)
  </code></pre>