><span class="lineno">  188</span>&#160;    renderer = lower(value);</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keywordflow">if</span> (~strcmp(renderer,{<span class="stringliteral">&#39;painters&#39;</span>,<span class="stringliteral">&#39;zbuffer&#39;</span>,<span class="stringliteral">&#39;opengl&#39;</span>}))</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;      error(<span class="stringliteral">&#39;Renderer mu