title: disable smarty notice
body: <p>I would like to disable smarty-s notices.</p>
  
  <p>This exactly:</p>
  
  <blockquote>
    <p>Notice: Undefined variable: xy</p>
  </blockquote>
  
  <p>Because I know that some variables are undefined and in some cases I don't even want to define them.</p>
  
  <p>BUT I don't want to disable other PHP notices.</p>
  
  <p>Thanks for help!</p>