12.1.3 Can you answer these questions?

12.1.3.1 coffins scope/groups

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757755

The current implementation of coffins seems to create two groups. 
(1) That's something I can rely on? 
In the example below, the double \aftergroup did the trick, but, of course, it will work as long ... 
[expl3]
 

asked by Frigeri https://tex.stackexchange.com/landing/r/digest?cta=user&id=207840 Score of 2

12.1.3.2 Could you add "Happy New Year" in your language? Have a wonderful 2026!

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757741

\documentclass[aspectratio=169]{beamer} 
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 
\usepackage{tikz} 
\usetikzlibrary{shapes.geometric, shadings, shadows} 
\setbeamertemplate{navigation ... 
[tikz-pgf]
                                                                                  

                                                                                  
 

asked by A~\221upi https://tex.stackexchange.com/landing/r/digest?cta=user&id=391437 Score of 1

12.1.3.3 Pic or Shape for collection of ready to use objects?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757758

For the graphics I use on my physics exercise sheets made with TikZ I often use the same objects (hooks, masses, carts, pulleys, force gauges,...). So instead of copy-pasting and modifying the code of ... 
[tikz-pgf] [tikz-pic] [tikz-shape]
 

asked by Sammy https://tex.stackexchange.com/landing/r/digest?cta=user&id=395186 Score of 4