Thank you for the pointer on installation. I think it would be helpful if the source tree had that information too, or at least a pointer to it.
To partly explain why I didn’t see the fine manual, I started off wanting to use the julia interface. It said it required CmdStan as a prerequisite, so I then ran to install it.
Seeing no binaries or instructions on how to build it, I decided RStan would be a safer choice. That also hasn’t worked out yet, but that’s another story