Name Refactoring

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If you don't know what it is: in Eclipse, when you right click on a variable or method/function name, one of the options is Refactor -> Rename. That will allow you to change the name of whatever you clicked on, and it will change everywhere it is referenced. It's not as simple as a find/replace, because if it's a local variable, it won't change global variables by the same name, vice versa, etc.