I'm reading the Nim manual and I think the `{.badger.}` style bits in
proc/function definitions mean two different things? They could be:
- pragmas, which have their own section in the manual,
- "calling conventions", which have a small and less visible section (a
definition list) in
<https://nim-lang.github.io/Nim/manual.html#types-procedural-type>

Is there a third use for this syntax?