9.25.3 Can you answer these questions?

9.25.3.1 Find a specific coordinate in TikZ Figure

https://tex.stackexchange.com/landing/r/digest?cta=question&id=683415

This is my first time asking something here so let me know if I did something wrong or should change the post in any way. 
I am fairly new with TikZ so this might be a very basic question but I haven't ... 
[pgfplots]
 

asked by Daniel Tieck Roldan https://tex.stackexchange.com/landing/r/digest?cta=user&id=295401 Score of 1

answered by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 Score of 0

9.25.3.2 How to define a colorbox command which can treat other user-defined commands in its argument?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=683232

I would like to highlight text including user-defined commands with linebreaks. I found a solution for linebreaks (Colorbox does not linebreak), but the \ctext{} command cannot treat other commands in ... 
[macros] [color] [expansion] [highlighting] [colorbox]
 

asked by TobiR https://tex.stackexchange.com/landing/r/digest?cta=user&id=142834 Score of 1

9.25.3.3 Are tikz and pgf designed to be pdf/a compliant? Good for Production Quality Scientific Data Graphing?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=683404

Related tohttps://stackoverflow.com/questions/76011224/is-there-an-r-4-2-1-pdf-a-compliant-pdf-output-device . 
Apparently, R can output to a Ti*k*Z device (https://cran.r-project.org/web/packages/... 
[tikz-pgf] [pdf-a]
 

asked by ivo Welch https://tex.stackexchange.com/landing/r/digest?cta=user&id=25779 Score of 1