8.55.1 Top new questions this week

8.55.1.1 How to make these four symbols in Latex?
8.55.1.2 Why are the zero stretch and shrink in the definition of \z@skip explicit?
8.55.1.3 Does a package exist for programmatically (incrementally) constructing a macro?
8.55.1.4 Why is the lineskip different when setting the font size in a node?
8.55.1.5 Plot intersection point of two curves
8.55.1.6 The 'backref' package and biblatex are incompatible
8.55.1.7 How to produce PDF/A and PDF/X in 2022?
8.55.1.1 How to make these four symbols in Latex?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655492

How to input these symbols in Latex? 
[symbols]
 
asked by ZZP https://tex.stackexchange.com/landing/r/digest?cta=user&id=279068 Score of 7
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 19
8.55.1.2 Why are the zero stretch and shrink in the definition of \z@skip explicit?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655561

Why do both The TeXbook and latex.ltx define \z@skip=0pt plus0pt minus0pt?  Wouldn't \z@skip=0pt or perhaps \z@skip=0pt\relax be shorter and yield the same?   I always thought that the stretch and ... 
[glue]
 
asked by GeekestGeek https://tex.stackexchange.com/landing/r/digest?cta=user&id=224332 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7
8.55.1.3 Does a package exist for programmatically (incrementally) constructing a macro?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655077

When using LaTeX, I often find myself desiring a way to programmatically construct a macro using a series of instructions rather than in the usual "template" sense. 
By "programmatically&... 
[macros] [parsing]
 
asked by COTO https://tex.stackexchange.com/landing/r/digest?cta=user&id=127753 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5
8.55.1.4 Why is the lineskip different when setting the font size in a node?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655233

I want to change the font size of text in a node. Ideally finally I have multiple font sizes in a node. However when trying to change the font size in the node, I get unexpected different line ... 
[tikz-pgf] [fontsize]
 
asked by TobiBS https://tex.stackexchange.com/landing/r/digest?cta=user&id=156791 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 6
8.55.1.5 Plot intersection point of two curves

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655189

I am plotting the following filled area 
\documentclass{scrartcl} 
\usepackage[usenames,dvipsnames]{xcolor} 
\usepackage{tikz} 
\usepackage{pgfplots} 
\pgfplotsset{compat=1.17} 
\usepgfplotslibrary{... 
[tikz-pgf]
 
asked by Squeezelemma https://tex.stackexchange.com/landing/r/digest?cta=user&id=78700 Score of 6
answered by hpekristiansen https://tex.stackexchange.com/landing/r/digest?cta=user&id=8650 Score of 8
8.55.1.6 The 'backref' package and biblatex are incompatible

https://tex.stackexchange.com/landing/r/digest?cta=question&id=654992

Still new to LaTex and found this question appearing many times here (link, link, link), but still couldn't figure out a solution. It seems like the other SO questions had pagebackref or hyperref ... 
[biblatex] [hyperref] [citing] [back-referencing]
 
asked by Penguin https://tex.stackexchange.com/landing/r/digest?cta=user&id=245307 Score of 6
answered by moewe https://tex.stackexchange.com/landing/r/digest?cta=user&id=35864 Score of 7
8.55.1.7 How to produce PDF/A and PDF/X in 2022?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=655521

As many of us know, there exists a package, called pdfx, originally codeveloped by HA~ n Tha'\272\[DownQuestion] ThA~ nh, which is supposed to be able to produce PDFs satisfying the PDF/X or PDF/A standards. However, it has ... 
[pdfx] [pdf-a]
 
asked by Gaussler https://tex.stackexchange.com/landing/r/digest?cta=user&id=19809 Score of 5
answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 Score of 6