> 1. Why does the firs derivatives paper updaed recently say (tick.k) vs (tick.q)
The paper wasn’t updated recently, the field in a footer of the document displays today’s date (it is just Date() built-in function) :)
It’s not recent. As Igor explained, the document will just show today’s date, which is why you’re seeing Sept 18. If you open it tomorrow it’ll show the 19th.