> I also noticed that along with lua 5.2 & and 5.3 it includes one simply named lua. I wonder what that is? It's LuaJIT, so corresponds to Lua 5.1. If you want to use another Lua interpreter, you can use path.lua setting to point to its location. See this section in the documentation for details: https://studio.zerobrane.com/doc-general-preferences#interpreter-path Paul.