It's also not just another Lua-like language, in that it is designed to deeply share the Lua VM, and that Lua and Pallene code can call each other easily and fa

It's also not just another Lua-like language, in that it is designed to deeply share the Lua VM, and that Lua and Pallene code can call each other easily and fast. The description "Sister language" is trying to impart that there is more going on with Pallene than just creating another new language that kind of resembles Lua.