             <span class='op'>=</span> <span class='ivar'>@w</span> <span class='op'>-</span> <span class='int'>2</span> <span class='op'>*</span> <span class='const'><span class='object_link'><a href="#SMALL_CORNER-constant" title="ExampleApp::MetalPanel::SMALL_CORNER (constant)">SMALL_CORNER</a></span></span>

  <span class='ivar'>@header</span><span class='period'>.</span><span class='id identifier rubyid_truncate'>truncate</span><span class='lparen'>(</span><span class='ivar'>@upper_edge_panel</span><sp