; 'a</code></pre><div class="info ">
<code class="code"><span class="constructor">Oo</span>.copy o</code> returns a copy of object <code class="code">o</code>, that is a fresh
   object with the same methods and instance variables as <code class="code">o</code>.<br>
</div>

<pre><span id="VALid"><span class="keyword">val</span> id</span> : <code class="type">&lt; .. &gt; -&gt; int</code></pre><div class="info ">
Return an integer identifying this object, unique for
    the current execution of the program. 