The following are concepts that you need to keep in mind when working with Lua.
Things to remember when working with Lua
Comments
A comment can be anything in between two hyphens and the next end of line:
--This is a comment
Comment blocks are also supported. They are delimited by the characters --[[ and ]]:
--[[
This is a multi-line
comment block.
]]
Dummy assignments
There are occasions where you don’t need all the information returned by a function, and in Lua, you can use dummy assignments to discard a return value. The operator is _ (underscore):
local _, _, item = string.find(<string...