I've skimmed Programing in Lua, I've looked at the Lua Reference.

However, they both tells me this function does this, but not how.

When reading SICP, I got this feeling of: "ah, here's the computational model underlying scheme"; I'm trying to get the same sense concerning lua -- i.e. a concise description of it's vm, a "how" rather than a "what".

Does anyone know of a good document (besides the C source) describing this?

Thanks!