I use the predecessor (11.5) to help with my incipient RSI as well.
Punctuation you have to spell out. It'll likely have a good crack at some commas in lists say.
Yes it's contextually aware. That's the whole point of the software and where it gets its reliability from. It also knows how apostrophes work.
The important thing - which this "review" completely missed - is that the program is adaptive. This is also the big difference between it and cloud versions (as though anyone cares where it runs!). When you use it it will make mistakes. You'll be tempted just to go and correct the errors using your keyboard. Don't. Instead you need to invest the time to correct mistakes using DNS itself. Then it will learn what you meant which increases the reliability hugely.