I use Prism 3 Mac under OSX, but the help system launches classic mode or doesn't launch at all.

 

The Help engine we use for Prism 3 Mac was not available for OS X when we released Prism 3 for OSX, so using any help screen launches classic mode (OS 9). Prism 4 Mac uses a different X help system that runs native under OS X so does not launch classic mode. The newer versions of OSX don't include classic mode. If you run Prism 3 under these newer OSX versions, you won't be able to use online help with Prism 3.