Thank you zzeeman. So I go to my usual q page, and the blue numbers are visible if place cursor on them?
I can understand how thread conversation and context can make a difference in understanding.
Once there, if you hover over any "red" post numbers in the particular post, they will display the post(s) being referenced.
Also, at the top of the post, you can see all of the replies to that given post by hovering over the set of smaller (very dark blue) post numbers as well.