Lua is a free software light-weight programming language designed for extending applications. Lua is also frequently used as a general-purpose, stand-alone scripting language. This package is for the version 5.1.x of lua, the one compatible with the software that needs lua on slackbuilds.org. There is also lua52, providing lua 5.2.x, but it's not parallel installable and it's still not compatible with anything here. If in doubt, choose this version (lua, *NOT* lua52).