pan class="op">|&gt;</span></span>
<span>  <span class="fu"><a href="../reference/add_variable.html">add_variable</a></span><span class="op">(</span><span class="st">"W"</span>, init <span class="op">=</span> <span class="fl">1</span>, desc <span class="op">=</span> <span class="st">"Wage rate"</span><span class="op">)</span></span></code></pre></div>
<p>Establish the relationships between variables by adding
equations:</p>
<div class="sourceCode" id="cb4"><pre class="downlit sourceCode r">
<code class="sou