title: Prestashop: SMARTY - force compilation / recompile when files are modified
body: <p>I'm working on a Prestashop site and recently noticed about the SMARTY features (Menu: Advanced > Performance). 
  I realized that in order to show changes I made in the css, I must select one of the last two options (first one was selected by default).</p>
  
  <p><a href="https://i.stack.imgur.com/U8dOz.jpg" rel="nofollow noreferrer">Screenshot</a> (I'm sorry the site is in Spanish)</p>
  
  <p>1)Never recompile template files</p>
  
  <p>2)Recompile templates when files are modified</p>
  
  <p>3)Force compilation</p>
  
  <p>My question is: when it comes to an online shop, wich option should I select until I finish editing the code? What's the difference between both?
  It may take me a couple weeks to finish the job and I don't want to mess anything up.</p>
  
  <p>Thank you guys.</p>