{grouping} is about the grouping mechanism in TeX, and about local and global assignments.

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Next word macro inside braces

I have defined a macro that highlights the next word using \def!##1 {\hkw{##1} }% where in this scope, ! is an active character. So it works fine to write. \emph{This is a !good example} but not ...
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Multiple ternary plots and pie charts in pgfplots

I'm trying to plot lots of ternary plots and pie charts. Ideally it should look smth like this: The pie-chart (ternary plot) on the left-hand side serves as an explanation of what is happening, ...
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How to get a *lazy* list to play nice with other environments

I've created a lazy itemize command. Partially I've just done it for the hell of it: to see if I could create a command to do what I want it to. Partially to try to get to understand better how ...
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Ending a tikzpicture environment in conditional causes “Missing } inserted”

I want to create a number of tikzpictures. I have a number of items I want to draw. Each tikzpicture takes up a whole page and may contain up to 4 items. (It is not good enough to to have each item in ...
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tcolorbox vs KOMAoptions: TeX capacity exceed

I tried to put a box around a definition, but got an error. The problem is, I am using a huge template, so I do not really understand most of the settings. If I add this to my file: ...