11.55.3 Can you answer these questions?

11.55.3.1 May imakeidx sort better after first occurrence

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749698

Below is an MWE which illustrate what I take to be some shortcomings in the index page produced. 
How may one make the Index of special symbols sort so that it is truthfully after first occurrence, and ... 
[indexing] [imakeidx]
 

asked by Frode Alfson BjA~,rdal https://tex.stackexchange.com/landing/r/digest?cta=user&id=24406 Score of 1

11.55.3.2 xdvi zoom --- menue has gone?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749537

For years I used xdvi on linux, for quick review of my latest changes. 
Mostly, what I saw was good enough and for details there is the mouse-click that presents a magnifying glass for the area where ... 
[linux] [xdvi]
 

asked by Gyro Gearloose https://tex.stackexchange.com/landing/r/digest?cta=user&id=103891 Score of 1

11.55.3.3 Preprocessing an environment body and replacing certain environments: Nesting aligns

https://tex.stackexchange.com/landing/r/digest?cta=question&id=749502

I want to learn some advanced token manipulation techniques and set myself the following "academic" challenge: Write an environment that takes its body, places certain elements of said body ... 
[align] [nesting] [argument-processors]
 

asked by sqrt6 https://tex.stackexchange.com/landing/r/digest?cta=user&id=339675 Score of 1