Does anybody know how you can draw a line, that starts very thin and then gets thick to the middle and then thin again? I hope this is clear because I cannot produce a minimal example here. I think this should be possible with tikz but any solution / suggestion would be welcome.
I would like to use it to separate the Author from the title on the titlepage.


gmppackage. There are surely TikZ based methods, too. – egreg Dec 12 '16 at 18:51pgfornament– Ignasi Dec 12 '16 at 19:58