4.21.3 Can you answer these questions?

4.21.3.1 How to obtain the opposite behaviour of vphantom to lift and align subscripts in LaTex

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=437088

I have the following issue on the alignment of subscripts in LaTex. 
The line of code producing this, being 
\documentclass[a4paper, 12pt, twoside]{book} 
\usepackage[utf8]{inputenc} 
... 
[math-mode] [subscripts]
 

asked by iaclon https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=165353 1 vote

4.21.3.2 Shifting baseline of CJK characters

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=436689

I'm using XeLaTeX with the xeCJK package for typesetting Chinese. I've set the Songti SC font on macOS as the main font, while also using Heiti SC and Fangsong in some places. 
I've noticed that  ... 
[fonts] [spacing] [xetex] [cjk]
                                                                                  

                                                                                  
 

asked by Hu Zecong https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=164187 2 votes

4.21.3.3 Multiple affiliations in ACM conference template

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=437323

The first author has multiple affiliations that are different in everything including country. The second author also has diffirent affiliation than the first author's two affiliations. 
How should I  ... 
[acm] [author-number] [author] [affiliation] [acmart]
 

asked by None https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=161340 1 vote