title: What is a "tag" in Lua 4.0?
body: <p>I was reading the Lua 4.0 manual and I came across this "tag" thing but I have no idea what it is referring to.</p>
  
  <p><a href="http://www.lua.org/manual/4.0/manual.html#3" rel="nofollow">http://www.lua.org/manual/4.0/manual.html#3</a></p>
  
  <p>That's the section where it mentions it but I still have no idea what the manual is talking about.</p>