title: Suppress the missing font warning with gnuplot
body: <p>I am using gnuplot and get this warning everytime I generate a graph:</p>
  
  <blockquote>
    <p>Could not find/open font when opening font "arial", using internal non-scalable font</p>
  </blockquote>
  
  <p>Is there a way to suppress the warning?</p>