Identifiers

• Any string of letters, digits, and underscores
  • Letters in ranges A-Z and a-z
• Cannot start with a number
• Avoid identifiers starting with an underscore followed by an uppercase letter
  • reserved for special uses in Lua
• Do not use reserved words in the language i.e. for, while, if, else, etc.
• In general
  • use meaningful names
  • use camel case to allow the reading of meaningful names