title: Drupal 7, how to add a "last updated" function on my site?
body: <p>I wish to add a "Last updated" on my web site (a text automatically showing when my site's content was last up dated). </p>
  
  <p>I found some answers on Drupal forum, unfortunately they all concern Drupal 6 and I simply couldn't get them to work on Drupal 7...</p>
  
  <p>Since I know about nothing about PHP, and I belive it requires to add some PHP code, thank you very much if the answer could be "as simple as possible", and very "step by step" :o)</p>
  
  <p>Thanks for any help!</p>