+ This application uses the "Clone2" ParaView example.
+ The "File" menu is organized for the first stage of CMB 6, which
  is to serve as a model viewer.
+ Change some behavior settings so the SMTK plugins are loaded properly.
+ Some XML tests of the viewer functionality are included.
+ The modelbuilder app allows fancy side-by-side panel docking by
  enabling nested docking.
+ A plugin exists to enable post-processing via a toolbar button.
  modelbuilder-based applications may load it for advanced users.