I do have PLEXVIEW. Trust me, if you don’t know what it is for then my recommendation is don’t ask for it. Not being mean but I am being frank with you.
It is SW designers & developers use to trace their code at the PLEX, C & Assembly level. They are able to view the SW signal path flow and basically are debugging the code at the source. It is a powerful tool but you need the specific system application so you can utilize, otherwise its useless. Also, some experienced switch testers can use too but normally its for designers.