title: paint-hires: unbound identifier in: paint-hires
body: <p>I was trying to follow how to do scheme and sicp from <a href="https://stackoverflow.com/questions/19546115/which-lang-packet-is-proper-for-sicp-in-dr-racket">Which lang packet is proper for SICP in Dr.Racket?</a></p>
  
  <p>but when I run code in the accepted answer</p>
  
  <pre><code>#lang sicp
  
  (paint-highres  (below (beside diagonal-shading
                           (rotate90 diagonal-shading))
                   (beside (rotate270 diagonal-shading)
                           (rotate180 diagonal-shading))))
  </code></pre>
  
  <p>I get error</p>
  
  <pre><code> paint-hires: unbound identifier in: paint-hires
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/H08f3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/H08f3.png" alt="Dr.Racket running scheme - paint error"></a></p>
  
  <p>I have installed the sicp package.
  Anyone know what the problem is?</p>