LabLua is a research lab at PUC-Rio, affiliated with its Computer Science Department. It is dedicated to research on programming languages, with emphasis on the Lua language. LabLua was founded on May 2004 by Prof. Roberto Ierusalimschy. Lua is a powerful, fast, lightweight, embeddable scripting language. Lua has been used in many industrial applications, with an emphasis on embedded systems and games. Lua is currently the leading scripting language in games (www.lua.org/about.html).