I was wondering the same thing, mostly because "NO_SYSTEM" is the default. If there is no harm or impact to using the "SYSTEM" option, I was curious why "SYSTEM" isn't the default. From George's answer a few years ago it almost sounds like "SYSTEM" is the preferred setting when running this tool
I wonder when it most appropriate to use the "NO_SYSTEM" setting....
This isn't a question anyone needs to answer. I just wanted to add my voice as to why I was confused which setting to use.
I will use the "SYSTEM" option going forward.