Wikipedia:Lua
en.wikipedia.org/wiki/Wikipedia:Lua
Article
Wikipedia:Lua
Wikipedia project page for MediaWiki Lua modules
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Lua is a programming language that is now available, via the Scribunto MediaWiki extension, on the English Wikipedia. Lua code can now be embedded into wiki templates by employing the "{{#invoke:}}" functionality of Scribunto. This extension supports Lua 5.1 as of July 2015.