Okay, I give up. I’ve searched this forum and the documentation and I cannot find a definition of LUUP and what it is used for.
Luup is LuaUPnP - an engine that combines Universal Plug and Play configuration/operation and the Lua programming/scripting language.
It’s the back-end of the Vera operating system.
Lua and UPnP you can find on Wikipedia. Luup you can find more about here:
http://wiki.micasaverde.com/index.php/Luup_Press_Release
(that’s an oldish page, but it’s a good start.)