Sorry, I want to check the difference between < pre lang="lua" and < code> for copy/pasting code (old forum always had invalid characters copied on what should have been blank lines).  I'll try to delete this afterwards, if not then it's a sandpit (or somebody else can delete it).
-- line
 
--another line
local a = 1  | 
-- line
 
--another line
local a = 1  | 
Yay, no extra characters copied with < pre lang, which used to really annoy me with the old forum.