I received an email notification from Gaiathri R announcing the availability of several Norton Products' manuals. The one single manual I was interested in was the one for NIS... Lo and behold, this is exactly the same manual as for NS... Correction: It is the exact same manual except for one small detail -- the download file names!!!
Download file name for NS -- Norton_Security_Windows_Manual.pdf
Download file name for NIS -- NIShelp-1.pdf
For the eye of the gullible reader (like myself), they are presented as 2 separate, different entities (see figure)... And, for necessity, they also have a different download file name... And that is it. Try them... In spite of their distinct identity names, they are one and the same animal... 
Oh, well... Just for a little fun, to alleviate from recent tensions, I would say... 
