→Extension Function Signature
So, this is basically the boilerplate that you'll need to use in order to expose a new function (i.e. you can just copy & paste this into the NasalSys.cxx file).
If you don't have anything else to return, you can just return naNil(), so that
the function looks like this:
static naRef f_cool (naContext c, naRef me, int argc, naRef* args)