Hi Larry,
The NanoVNA command listing you posted is all that is needed to communicate with the NanoVNA.
I am writing an article on the NanoVNA as well as writing software to perform all the functions of the NanoVNA Sharp and more. My emphasis is on impedance calculations, checking filters, measuring crystals and equivalent circuit models. I do not care for depending on NET.framework or Python. So my software runs on old/cheap laptops running Win XP. These laptops work well in my lab environment and this low-cost VNA does a good job for me.
Regards,
George