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Say I have an arrow leading pointing from one node to another node under TikZ. Is there a way to highlight this arrow?

I'm looking for a result that looks (more or less) as though I've printed a diagram and used a highlighter marker to accentuation an arrow. Preferably, only the arrow would be highlighted.

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Could you provide the code showing the diagram you developed? This would help a lot people that want to answer you. :) – Claudio Fiandrino Sep 19 '12 at 16:28
up vote 9 down vote accepted

You can put a double line(or a thick line) behind your path

\draw[ultra thick,-latex, %Regular stuff
preaction={%But before that
draw,yellow,-,% Draw yellow without any arrow head
double distance=2\pgflinewidth,
}] (0,0) to[bend right] (2cm,2cm);

enter image description here

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This is exactly what I was looking for! – Chernoff Sep 19 '12 at 18:23
@Chernoff: Care to accept this answer? – krlmlr Oct 18 '12 at 21:30

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