12.13.3 Can you answer these questions?

12.13.3.1 Modifying existing math kerns (aka cut-ins or staircase kerning) to OpenType math fonts

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760198

It seems that the code from this answer works when introducing new math kerns (aka cut-ins or staircase kerning), but does not seem to modify existing ones. 
\documentclass{article} 
\usepackage{... 
[math-mode] [kerning] [opentype] [directlua]
 

asked by Apoorv Potnis https://tex.stackexchange.com/landing/r/digest?cta=user&id=128462 Score of 2

12.13.3.2 Uniform sequences of mathematical dots

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759944

When I need to write a sequence of dots without using TikZ, I often define a simple macro based on \bullet or another symbol that produces two or three dots (which they can be increase and decrease in ... 
[math-mode] [macros] [pdftex] [packages] [mathtools]
                                                                                  

                                                                                  
 

asked by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 Score of 1

12.13.3.3 Two synchronised but different documents on even and odd pages

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760166

I would like to generate a document that merges two documents: the first one states the theory, and the second one presents examples. Both documents have exactly the same structure: the chapters, ... 
[memoir] [paracol] [parallel] [parallel-texts]
 

asked by Christophe https://tex.stackexchange.com/landing/r/digest?cta=user&id=289475 Score of 1