11 questions linked to/from How do I debug pgfkeys?
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### How to list all known pgfkeys? [duplicate]

Is there a way to list all known pgfkeys (i.e., those that are currently set)? Concretely, I'm looking for a way to get the value of the tikz scale option. I was hoping there would be a pgfkey for ...
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### LaTeX3 versus pure Lua

Reading this site for the last nearly two years I've learned a lot about LaTeX3 (which I had previously understood to be a defunct pipe dream) and LuaTeX (of which I was previously totally unaware). ...
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### How to best debug LaTeX?

..and I don't mean finding out why it doesn't compile, I mean serious debugging: breakpoints, figuring out value of variables at a given moment during run/compile, stepping, examining a stack (is ...
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### “Z-level” in TikZ

This is an idle question, but neverthless, I think it's interesting. Does TikZ have a simple way to implement a "z-level" specification. By this, I don't mean 3D drawing, I mean specifying which ...
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### How can I force TikZ pin angle?

I'm trying to draw a resultant force diagram like so: \documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \draw (0,0) -- (90:2.7) -- ++ (-13:12) node[shape=...
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### Checkers board in TikZ.

What is the best way to draw checker board in tikz? I'm interested in what is the best way to draw many circular pieces on board. (the checker background is not important)
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### How to change the level distance in tikz-qtree for one level only?

I am trying to draw a tree for a game theory problem. The problem is that the label p1=0.5 crosses label I. I would like to adjust the level distance of the first level, but the \tikzset{level ...
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### How to know the status of a style? defined? empty?

mystyle/.style= {...} is perhaps used ? I would like to know how to verify if the style is really defined and in this case, I would like to know if the style is empty ? Is it possible to use \...
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### Accessing a style property in TikZ? [duplicate]

Possible Duplicate: How to extract the value from a pgfkeys style element Let us assume I have defined the following TikZ style: \tikzset{ mystyle/.style={draw, fill=green, node distance=3mm} }...