end on how extensively you have
        modified the stock skin distribution. If the modifications are slight,
        approach #1 will be easier, otherwise use approach #2.</p>
    
    <h3>Backwards compatibility</h3>
    
    <p>With the introduction of explicit control of output units in the
        templates such as</p>
    
    <pre class="tty">$day.outTemp.max.degree_C</pre>
    
    <p>the calling signature of the following two Python classes was changed</p>
    <ul>
        <li><span class="code">w