[Faark]

> There's nothing lost by putting the sig in a companion file and leaving it to your editor/IDE to provide a popup.

I don't want to go back to having to keep C header file in sync. Your IDE can hide that information from your as well, if you don't want to see it all the time.

[mcintyre1994]

It's been a while since I wrote Ocaml, but IIRC the compiler yells at you if your mli files are out-of-date, for whatever that's worth. So keeping them synced isn't really an issue.