 axes. To use, call this on a <tt>TGLViewer</tt> object:
<pre>
   gl_viewer->AddOverlayElement(new TGLCameraGuide(0.9, 0.1, 0.08));
</pre>
</li>

<li>Fix an issue with GL-clip object not being properly updated after
a scene update.</li>

<li>Hide / show menu-bar with a time-out (default 400ms). This can be
adjusted by calling static method:<pre>
  TGLSAViewer::SetMenuHidingTimeout(200);</pre>
To disable menu hiding for Eve viewers, where it is enabled by
  default, set the following rootrc variable:<pre>
  