6.20.3 Can you answer these questions?

6.20.3.1 Adapting babel specific code for polyglossia in XeLaTeX
6.20.3.2 Add specific heading content only when the environment extends to several pages
6.20.3.3 Subfile Sectioning number
6.20.3.1 Adapting babel specific code for polyglossia in XeLaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=542048

Using pdflatex and babel I have this code (taken from the answer to this question) to redefine the way \autoref from the hyperref package prints my references, it also adds automatically the  ... 
[xetex] [hyperref] [cross-referencing] [babel] [polyglossia]
 
asked by LinusDieLinse https://tex.stackexchange.com/landing/r/digest?cta=user&id=208633 1 vote
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 0 votes
6.20.3.2 Add specific heading content only when the environment extends to several pages

https://tex.stackexchange.com/landing/r/digest?cta=question&id=541719

I defined an environment in the following way: 
\documentclass[ 
headsepline, 
]{scrartcl} 
\usepackage{blindtext} 
\pagestyle{myheadings} 
\newcounter{mycounter} 
\setcounter{secnumdepth}{0} 
... 
[environments] [koma-script]
 
asked by Thomas https://tex.stackexchange.com/landing/r/digest?cta=user&id=200181 1 vote
6.20.3.3 Subfile Sectioning number

https://tex.stackexchange.com/landing/r/digest?cta=question&id=542004

So I want to write my Script in LaTex and wanted to Structure it using the Subfile Package. I managed to include it and the main.tex file is working as wanted. 
My problem now is, that when i want to  ... 
[sectioning] [formatting] [packages] [subfiles]
 
asked by Yannis https://tex.stackexchange.com/landing/r/digest?cta=user&id=214528 1 vote