Recently, it was announced in OCaml official github that Camlp4 is replaced by ppx rewriters and extension points (https://github.com/ocaml/camlp4): Camlp4 was part of the official OCaml distrib...

I was looking at the manual and found that there are attributes in OCaml for declaring things as deprecated (see http://caml.inria.fr/pub/docs/manual-ocaml/extn.html), but I can not figure out how ...