9.47.3 Can you answer these questions?

9.47.3.1 in minipage and parbox, lineskip is smaller
9.47.3.2 General (dis)advantages of ways to define new commands
9.47.3.3 How to provide space for many or long sidenotes in tufte-book?
9.47.3.1 in minipage and parbox, lineskip is smaller

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691038

I am writing exercises answers, and I would like one particular answer to be displayed on two lines (in my example, answer nA^Degree(6)). I tried to use a parbox or a minipage environment, but in both cases ... 
[spacing] [multicol] [vertical] [parbox]
 
asked by Garulfo https://tex.stackexchange.com/landing/r/digest?cta=user&id=152031 Score of 1
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 0
9.47.3.2 General (dis)advantages of ways to define new commands

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691109

I have a question about the many ways to define a new command. 
I looked through the web and TeX.SE but couldn't find a complete answer (only some partly answers like, here, here, here, or here). 
I ... 
[macros] [expl3] [best-practices] [documentclass-writing] [primitives]
 
asked by lukeflo https://tex.stackexchange.com/landing/r/digest?cta=user&id=297560 Score of 3
9.47.3.3 How to provide space for many or long sidenotes in tufte-book?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=691169

I use tufte-book and have too many sidenotes to fit on a page. In these cases, the sidenotes run longer than the bottom margins and are lost for the reader. How can the sidenote text, which does not ... 
[tufte] [tufte-book]
 
asked by user855443 https://tex.stackexchange.com/landing/r/digest?cta=user&id=161067 Score of 1