I've been testing out TikZ lately, but I'm still quite new to it. What I want to do is to create a line to indicate that a parameter belongs to a part of the drawing. For example "This surface that I'm pointing at has temperature T". What I've seen used sometimes is to have a line or arrow with a small S-bend on the middle. I think this is a good idea as it's easy to see that the line doesn't have anything to do with the body you're drawing. Unfortunatley I had some problems finding a picutre explaining what I'm thinking of. The arrow specifying Pθ on this picture was the best I could find allthough it's not completly the same.
Is there any easy way to do something like this in TikZ? I have no idea what it would be called...
to[out=90,in=180]
keyword you are looking for, I think. – Yossi Farjoun Dec 1 '10 at 16:20