This feels like a continuation of STEPS(STEPS Toward Expressive Programming Systems) project by Viewpoint Research Institute, which produced a universal documen

This feels like a continuation of STEPS(STEPS Toward Expressive Programming Systems) project by Viewpoint Research Institute, which produced a universal document viewer and editor called Frank: http://www.vpri.org/pdf/tr2012001_steps.pdf http://www.vpri.org/pdf/tr2012001_steps.pdf