10.10.1 Top new questions this week

10.10.1.1 What is the difference between LaTeX and Overleaf?
10.10.1.2 Cleveref mistakenly showing filename in external references
10.10.1.3 Draw tangent line on a curve
10.10.1.4 An expandable command that adds a string to an argument if the string is missing
10.10.1.5 Space between a/b differentiation with BibLaTeX
10.10.1.6 is there a lineno.sty interactions with \widowpenalty and \clubpenalty?
10.10.1.7 trouble with expansion in ltproperties
10.10.1.1 What is the difference between LaTeX and Overleaf?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708018

What is the difference between LaTeX and Overleaf? I am definitely so lost. Is it recommended to install anything or working online is just fine? 
[overleaf] [latex-misc] [technical-environment]
 
asked by SofA~\[DiscretionaryHyphen]a Hornilloshttps://tex.stackexchange.com/landing/r/digest?cta=user&id=313134 Score of 11
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 34
10.10.1.2 Cleveref mistakenly showing filename in external references

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708441

I am using a combination of xr-hyper, hyperref and cleveref with multiple files.  Old code that I have is no longer working correctly.  The external references now include the file name of the ... 
[cleveref] [xr-hyper]
 
asked by Andrew Swann https://tex.stackexchange.com/landing/r/digest?cta=user&id=15925 Score of 7
answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 Score of 10
10.10.1.3 Draw tangent line on a curve

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708296

I would like to draw a tangent line on (x0) which is an intersection between vertical line and the red curve, this is my code 
\documentclass[tikz,preview,border=1mm]{standalone} 
\usetikzlibrary{calc,... 
[tikz-pgf] [plot]
 
asked by Hariz Khaled https://tex.stackexchange.com/landing/r/digest?cta=user&id=293864 Score of 5
answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 2
10.10.1.4 An expandable command that adds a string to an argument if the string is missing

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708392

I would like to write and expandable command which adds a string S1 at the beginning of another string S2 if S2 does not start with S1 in order to ensure that my string always start by S1. 
I currently ... 
[macros] [expl3] [expansion] [programming] [xstring]
 
asked by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=17200 Score of 5
answered by matexmatics https://tex.stackexchange.com/landing/r/digest?cta=user&id=290058 Score of 4
10.10.1.5 Space between a/b differentiation with BibLaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708387

I'm trying to set a longer document and stumbled upon the following problem using authoryear-comp: 
If I've set uniquelist=minyear, I get citations with NAME YEARa and NAME YEARb, if the author list is ... 
[biblatex]
 
asked by Nils Reiter https://tex.stackexchange.com/landing/r/digest?cta=user&id=151632 Score of 5
answered by Andrew Swann https://tex.stackexchange.com/landing/r/digest?cta=user&id=15925 Score of 6
10.10.1.6 is there a lineno.sty interactions with \widowpenalty and \clubpenalty?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708337

I stumbled upon an interaction effect between lineno.sty and \widowpenalty and \clubpenalty.  It's good to put this into a record that is searchable here: 
\documentclass[12pt]{article} 
\widowpenalty=... 
[widows-orphans] [lineno]
 
asked by ivo Welch https://tex.stackexchange.com/landing/r/digest?cta=user&id=25779 Score of 5
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 4
10.10.1.7 trouble with expansion in ltproperties

https://tex.stackexchange.com/landing/r/digest?cta=question&id=708346

I am struggling to control expansion in code recorded with ltproperties. In the following example, I am trying to record the body of an environment as stated, without expansion (so as if with \exp_not:... 
[expl3] [expansion] [auxiliary-files] [ltproperties]
 
asked by mbert https://tex.stackexchange.com/landing/r/digest?cta=user&id=208544 Score of 5
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 4