local variables [url]http://en.wikipedia.org/wiki/Local_variable[/url]
global variables [url]http://en.wikipedia.org/wiki/Global_variable[/url]
instance variables [url]http://en.wikipedia.org/wiki/Instance_variable[/url]
global variables [url]http://en.wikipedia.org/wiki/Global_variable[/url]
instance variables [url]http://en.wikipedia.org/wiki/Instance_variable[/url]