Identifiers

> Identifiers are used for constant names, variable names, array names, function names and custom type names.

> Identifiers must start with an alphabetic character, and may be following be any number of alphanumeric characters, or the underscore ('_') character.

> These are all valid identifiers:

> - Hello

> - Score

> - player1

> - time_to_live

> - t__

> Indentifiers are not case sensitive.

> For example, 'Test', 'TEST' and 'test' are all the same identifiers.

> However, it is allowed for identifiers to be reused for functions and custom types names.

> For example, you can have a variable called 'test', a function called 'test' and custom type name called 'test'. Blitz will be able to tell which one you are refering to by the context in which it is used.