A single-line comments starts with "--" and ends at the end of the line, eg.
a = 42 -- initial value of 'a'
You can also use "block" comments by following the hyphens by brackets like this:
--[[
Written by Nick Gammon.
Date: 3rd June 2011
]]
To allow for nesting block comments you can add in one or more "=" symbols like this:
--[=[
Written by Nick Gammon.
Date: 3rd June 2011
--[===[
Nested comment.
]===]
Not nested.
]=]
See Also ...
Lua keywords/topics
assignment
break
data types
do
for (generic)
for (numeric)
function
identifiers
if / then / else
keywords
local
logical operators
precedence
relational operators
repeat
return
string literals
tables
while
Topics
Lua base functions
Lua bc (big number) functions
Lua bit manipulation functions
Lua coroutine functions
Lua debug functions
Lua io functions
Lua LPEG library
Lua math functions
Lua os functions
Lua package functions
Lua PCRE regular expression functions
Lua script extensions
Lua SQLite (database) interface
Lua string functions
Lua syntax
Lua table functions
Lua utilities
Scripting
Scripting callbacks - plugins
(Help topic: lua=comments)