title: Including a postscript file into another one?
body: <p>I wonder if there a standard way to <strong>include</strong> a <strong>postscript</strong> file into another.
  For example, say I have got one file of data generated by a 3rd party program:</p>
  
  <pre><code>%!PS
  \mydata [ 1 2 3 4 5 6       
  (...)
  1098098
  1098099
  ] def
  </code></pre>
  
  <p>and I would like to include it into a main PS document</p>
  
  <pre><code>%PS
  \processData
  {
  mydata { (..) } foreach
  }
  
  (...)
  
  (data.ps) include %&lt;=== ???
  </code></pre>
  
  <p>Thanks</p>