what is mini image and orginal image ??

[feathersea]

dont laught ,I really no idea what they about?
first mini image?is that kind of small file which can cheat your program that you are playing game with a real cd?
and orginal image,that mean you copy your orginal cd by using the clonecd of alcohole ,what is that for?I mean in the case you already had a orginal cd

thanks~~