title: gnuplot--fill the space between two functions
body: <p>I have two functions, like:</p>
  
  <pre><code>f(x)=2**x
  g(x)=1024
  </code></pre>
  
  <p>how can I use gnuplot to plot these two functions for x from 0 to 10 and fill the space between them?</p>