11.61.3 Can you answer these questions?

11.61.3.1 scrlttr2: On multi-page documents, the spacing between the text and the footer is not equal
11.61.3.2 What is glue and why is it important?
11.61.3.3 Chinese Typesetting: babel v.s. ctex-kit?
11.61.3.1 scrlttr2: On multi-page documents, the spacing between the text and the footer is not equal

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750624

I would like the spacing between the text and the footer to be the same on all pages, but it seems that footskip is used to set different things. On the first page, the value determines the spacing ... 
[scrlttr2] [footer]
 
asked by penguinTex https://tex.stackexchange.com/landing/r/digest?cta=user&id=413749 Score of 1
answered by cabohah https://tex.stackexchange.com/landing/r/digest?cta=user&id=277964 Score of 0
11.61.3.2 What is glue and why is it important?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750741

Searching for an indentation problem, I found this question How to add indentation and this answerhttps://tex.stackexchange.com/a/392800/77017. 
In the comments @cfr identified this as a "not so ... 
[indentation] [glue]
 
asked by Olaf Dietsche https://tex.stackexchange.com/landing/r/digest?cta=user&id=77017 Score of 2
11.61.3.3 Chinese Typesetting: babel v.s. ctex-kit?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=750737

Description 
AFAIK, there are two frameworks to typeset Chinsese Character in LaTeX: 
One is babel package, another is the ctex-kit package. Also, claimed that I was a Chinese LaTeX user, most of people ... 
[babel] [chinese] [ctex]
 
asked by Explorer https://tex.stackexchange.com/landing/r/digest?cta=user&id=322482 Score of 1