This is a well written book printed in the last 6 months relating to Lua 5.0 and 5.1 syntax and constructs definition. It is the official manual for defining the language but it is not a programmer's tutorial and a handy hints and tips manual. The printing in book form was an arrangement between The Queen, the printers, and me as liaison with lua.org, with amazon.co.uk as the stockist and affording a low price. There are other books available for versions 5.0, 5' [sometimes 5 mark] and 5.1 software packs which run on specific hardware platforms only.