yword">var</span>
  <span class="Identifier">counter</span> <span class="Operator">=</span> <span class="DecNumber">1</span>
  <span class="Identifier">instance</span><span class="Punctuation">:</span> <span class="Keyword">ptr</span> <span class="Identifier">Singleton</span>
  <span class="Identifier">exceptionOccurred</span> <span class="Operator">=</span> <span class="Identifier">false</span>
  <span class="Identifier">o</span><span class="Punctuation">:</span> <span class="Identifier">Once</span>
<span 