11.85.1 Top new questions this week

11.85.1.1 Custom 3D line plot in plain tikz and/or luadraw
11.85.1.2 \prime \dprime \tprime (not so much) \qprime (looks good) STIX TWO
11.85.1.3 Why cannot \par be printed here?
11.85.1.4 How to use \setcapwidth with \maxof from calc in TeXLive 2025?
11.85.1.5 Booktabs cmidrule creates unwanted vertical space
11.85.1.6 How to create Tikz figure with surface and its shadow, as shown in image
11.85.1.7 Combine numbers from custom commands into a range
11.85.1.1 Custom 3D line plot in plain tikz and/or luadraw

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757325

Disclaimer 
This question is a bit of "do it for me" but there is a histrory behind it, see this question. 
User Jasper offered me a solution without using pgfplots. 
I plan to add a bounty as ... 
[tikz-pgf] [3d] [luadraw]
 
asked by Dr. Manuel Kuehner https://tex.stackexchange.com/landing/r/digest?cta=user&id=14649 Score of 12
answered by nidarfp https://tex.stackexchange.com/landing/r/digest?cta=user&id=406312 Score of 10
11.85.1.2 \prime \dprime \tprime (not so much) \qprime (looks good) STIX TWO

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757371

The motivation 
Pfaff, Johann Friedrich: Methodus generalis, aequationes differentiarum partialium, nec non aequationes differentiales vulgares, utrasque primi ordinis inter quotcunque variabiles, ... 
[fonts] [superscripts] [math-fonts] [stix2]
 
asked by Steven Thomas Hatton https://tex.stackexchange.com/landing/r/digest?cta=user&id=231461 Score of 11
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 10
11.85.1.3 Why cannot \par be printed here?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757366

I ask this question only out of curiousity's sake. I am not actually planning on defining a new command called \cmd because the usual \cs macro has superior syntax. (\cmd<command name, including ... 
[macros]
 
asked by User23456234 https://tex.stackexchange.com/landing/r/digest?cta=user&id=278534 Score of 8
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 8
11.85.1.4 How to use \setcapwidth with \maxof from calc in TeXLive 2025?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757278

As of TexLive 2025, I started running into an error with the following MnWE: 
\documentclass{scrartcl} 
\usepackage{calc} 
\setcapwidth{\maxof{\textwidth}{0.8\textwidth}} 
\begin{document} 
This fails with ... 
[koma-script] [lengths] [calc] [texlive-2025]
 
asked by mforbes https://tex.stackexchange.com/landing/r/digest?cta=user&id=6903 Score of 8
answered by jlab https://tex.stackexchange.com/landing/r/digest?cta=user&id=316068 Score of 8
11.85.1.5 Booktabs cmidrule creates unwanted vertical space

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757428

I am making the following table using LaTeX. One way to do it is to make a separate row for the "Top Header" header. However, this results in space below that header and the "sub ... 
[tables] [booktabs] [vertical-spacing]
 
asked by profj https://tex.stackexchange.com/landing/r/digest?cta=user&id=8078 Score of 7
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 8
11.85.1.6 How to create Tikz figure with surface and its shadow, as shown in image

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757334

I wish to make this figure with Tikz. I have tried but I can't make as in figure. Can you please assist me? 
\documentclass[tikz,border=10pt]{standalone} 
\usepackage{tikz} 
\usetikzlibrary{arrows.meta,... 
[tikz-pgf] [pgfplots]
 
asked by Latexfan https://tex.stackexchange.com/landing/r/digest?cta=user&id=103393 Score of 7
answered by kabenyuk https://tex.stackexchange.com/landing/r/digest?cta=user&id=204924 Score of 6
11.85.1.7 Combine numbers from custom commands into a range

https://tex.stackexchange.com/landing/r/digest?cta=question&id=757318

Ia^\200\231m defining datas in LaTeX with a custom command that stores both a label and a number: 
\documentclass{article} 
\usepackage{parskip} 
\newcommand{\data}[3]{% 
\expandafter\newcommand\csname #1\... 
[macros] [expandafter] [newdocumentcommand]
 
asked by taiwan12 https://tex.stackexchange.com/landing/r/digest?cta=user&id=235794 Score of 7
answered by Explorer https://tex.stackexchange.com/landing/r/digest?cta=user&id=322482 Score of 5