.... In my opinion, in the absense of a better term, "topic" is not a bad one.

That's the whole point. Any term is not a bad one in the absence of a better one.

For those "power users," who need to know the internal representation, it would help to state clearly in "Quick Start" and all other ...

I just bought V3 after using an early version for a long time and I agree with the statements here. One thing that all great programs have in common is they are intuitive. Some you don't even need the manual and rarely look at the help file. The terminology will take a bit of getting used to. I ...