Reference manuals
The manual for the latest version of Lua is available in several languages:
5.1: english · português · español · русский
The manuals for previous versions are available in English only:
5.0 · 4.0 · 3.2 · 3.1 · 3.0 · 2.5 · 2.4 · 2.2 · 2.1 · 1.1 · 1.0
The manuals for these versions are also available here in PostScript and PDF.
All reference manuals are freely available under the terms of the Lua license.