## Top new questions this week:

### Practical use of lua

Although I always use Lualatex to compile my documents, I don't really use lua that often. Sometimes I even forget about it. In my last document I used it to write a random word generator, which …

{lua}

### Why do we use the Latex logo when referring to Latex in text?

It seems standard practice, when typesetting with Latex, to put the Latex logo in the text whenever we are referring to Latex itself (usually through the \LaTeX command). Why do we do this? It's …

{typography} {latex-project} {logos}

### Rounding a number to its hundred

Does anybody know how I could have LaTeX round a number like 2,386 so that I finally get only written 2,300? I tried with siunitx and its option [round-mode=places,round-precision=-2] but it didn't …

{math-mode} {siunitx} {calculations}

### What is the difference between LyX and LaTeX?

Currently I am using LaTeX to typeset all my math reports. Recently I found out that LyX also uses LaTeX, which can also generate PDF, accept commands from LaTeX, but is easier to use as it does not …

{lyx} {editors}

### Differences regarding kerning and ligaturing when using the MacTex2013 and MacTeX2014 versions of LuaLaTeX with .ttc fonts

This posting is a follow-up to the postings Can't generate ligatures with LuaLaTeX under TeXLive 2014 when using certain fonts and LuaLaTeX, fontspec, .ttc fonts and kerning (Optima on Mac OS). I have …

{fonts} {luatex} {mactex} {ligatures} {kerning}

### Tikz: Drawing railway tracks

I like to draw a double line such that the gap between the two lines is transparent. My purpose is to draw railway tracks: \documentclass[tikz]{standalone} \tikzstyle{track}=[ …

{tikz-pgf}

### Move Moon on its orbit around the Earth

I want to draw my Moon on its orbit around the Earth. I can easily draw the moon on the perpendicular axes centring on the Earth but to move it around would probably require some trigonometry... Is …

{tikz-pgf}

## Greatest hits from previous weeks:

### Make MS Word document look like it has been typeset in LaTeX

A few years back, I used to use LaTeX for writing reports and such, and I really liked the look of them. However, nowadays I am forced to use MS Word to write my reports, but that does not hinder me …

{formatting} {typography} {msword} {word-to-latex}

so everything was working fine ... until i upgraded to os x mavericks (version 10.9.2) a couple days ago. using emacs version 24.3 (9.0) auctex version 11.87.3 after upgrade, tried to compile and …

{pdftex} {emacs} {auctex} {osx}

### LuaLaTeX, fontspec, .ttc fonts and kerning (Optima on Mac OS)

I'm probably missing something obvious. I'm using MacTeX 2014. I want to use the font Optima that ships with the Mac OS (10.8.5) -- it is a .ttc font. If I typeset the following TeX file I get no …

{fonts} {luatex} {fontspec} {mactex} {kerning}

### Workaround for open lualatex bug in \scantokens?

As package author I am in need of writing a manual with lots of examples. Now I started to make heavy use of lualatex in order to speed up operations which take a long time in TeX (of my package, not …

{luatex} {verbatim} {expansion}