[MylesMyles]

Is there a way to modify a part in an assembly without changing the actual part file? For instance, if I have a part in an assembly, is there a way to modify a feature of the part without changing the same feature in the actual part file? Or is it just easier to create a new configuration of the part?

Thanks for your help, and sorry if these are really basic questions, its just that I haven't used SolidWorks for too long.