Reference e AddOns WoW API Widget API XML UI Event API WoW Lua Macro API CVars Battle.net HOWTOs Snippets UI tech Categories → WoW Lua ← WoW Lua Make all the lower case characters in a string upper case. string.upper(s) strupper(s) Example[edit | edit source] > = string.upper("Hello, Lua user!") HELLO, LUA USER! Categories: WoW Lua Lua functions Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.