Strafakte.de reports on die badische Aktenheftung as something historical. I have heard about this before and I suspect it’s still partially alive. In Baden, a special method of binding documents and bundles of documents has been in use since at least 1801 and they are sticking to it. Some more in Wikipedia, and more pictures. You need a special hole punch and also a bodkin/bodger to create tiny holes.
There was a famous case in 1970 when the court in Baden tried to refuse files returned from Cologne without the right binding.
At the bottom of this page you can see three types of binding:
Württembergische Büschel (rechts), badische Oberrandheftung (oben links) und preußische Fadenheftung (unten links)
Württemberg pink, Baden orange and Prussia buff (Prussia used to cover a lot of Germany).
This made me think how many local peculiarities live on in various parts of Germany – when you learn about the law you would think a lot of it is uniform. And 1801 or earlier does somewhat predate the existence of Germany as a country.
When I was training I learnt how to sew documents using green tape. These things are so much harder to photocopy that I wonder how often it is still done. But you can find information online so it is not quite dead yet.
Sewing together a legal document, from the Legal Secretary Journal.
A YouTube video in which Maria shows how to bind legal documents – interestingly classified as Comedy.