title: gnuplot reseting terminal to default output
body: <p>In gnuplot, using the commands</p>
  
  <pre><code>set term pdf
  set out 'filename.pdf'
  plot sin(x)
  </code></pre>
  
  <p>allows me to write the image to a pdf.  After doing so, how do I reset the output so that <code>plot sin(x)</code> creates the image using the built-in gnuplot display (as it does without ever have using <code>set out</code> in the first place).</p>
  
  <p>Right now I can only acheive this by restarting gnuplot.  The <code>reset</code> command does not seem to help.  Thanks all!</p>