Lua Programming/How to Lua/keyword
A keyword is a reserved word that has a special meaning to the lua interpreter. Keywords cannot be used as identifier names within a lua script. The following table contains a list of keywords used by the lua interpreter:
Lua is lettercase sensitive
The lua programming language is lettercase sensitive. This means that the keywords above are only reserved in the form stated. If the lettercase of a word does not match that of the keyword, then the word will behave as a normal identifier.