Hi, I have been looking for a detailed description of how closures are implemented in Lua, and found this document which appears to be an unpublished draft version: http://www.cs.tufts.edu/~nr/cs257/archive/roberto-ierusalimschy/closures-draft.pdf I have read through the other papers but this one appears to go into greater detail. Is it possible to add this document to the list of Lua papers? Thanks and Regards Dibyendu