d.  (Note that docutils requires a space before and
after the ":" used to mark classifiers.)
</p>

<div class="screen"><pre>
<code class="keyword">def</code> <code class="function">fox_speed</code>(size, weight, age):
    <code class="string">"""
    Return the maximum speed for a fox.

    <code class="field">:Parameters:</code>
      size
          The size of the fox (in meters)
      weight : float
          The weight of the fox (in stones)
      age : int
          The age of the fox (in years)
    ""