literal">&quot;use Raytracer&quot;</span>,<span class="charliteral">&#39;4&#39;</span>,<span class="stringliteral">&quot;4&quot;</span>,useRayTracer,PropertyCommand::Toggle);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        useRayTracer.IsVisible(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        