bookup.com

Is there an eBook of documentation for the program? There are a couple of nuances that are unclear to me such as the rectangular diagram displayed with some moves, etc. If so, how do I get it? I presume that if one wants both the Windows and MAC version, one must pay for the other version if one owns one of the versions of professional. Thanks

I'm not sure what you meant by a "rectangular diagram" next to the moves.

When you log in, if you have the Windows version then the Mac version tab should have a special "cross platform" upgrade price and vice versa if you have the Macintosh version.