# How to produce handwritten arrows?

In the article Topologies et Faisceaux by Demazure, one can find the following arrows (well, it is not in the link, but in the book version):

And, out of pure curiosity, I am wondering if it is possible to reproduce this effect in (La)TeX? I think this kind of hand-written arrows are quite fun to read. :)

I don't know if an MWE is needed; I have no clue how to produce this sort of things in TeX at present.

Thanks for any help or reference.

• They are actually handwritten. From times when technology wasn't that advanced. – Manuel Oct 19 '16 at 8:24
• Thanks for the response. And I want to know how to produce the hand-written arrows like that. :-D I think it would be fun to code such arrows out. :) – awllower Oct 19 '16 at 8:27
• Maybe a task for a very rainy Sunday afternoon; some random variation of a path in Metapost. The simplest way is scanning and tracing a few of them. – egreg Oct 19 '16 at 9:47
• The Teen Spirit (fts) font. See, for example, tex.stackexchange.com/questions/317190/… – Steven B. Segletes Oct 19 '16 at 10:29
• Various options here: tex.stackexchange.com/q/39296/89098 – Ross Oct 19 '16 at 14:08

\documentclass{article}
$\begin{array}{cccccc} U_1&\raisebox{-.5\height}{\includegraphics{ra1}}&U_2& \raisebox{-.5\height}{\includegraphics{ra2}}&U_3\\ \includegraphics{ua1}&&\includegraphics{ua2}&&\includegraphics{ua3}\\ S_1&&S_2&&S_3 \end{array}$