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Well this link will give you all the basics so save it somewhere save ^^ the thread that explained it more looks to have been moved lol so:
Time frame.
It basically means keep in time with what your opponent is doing and always start your turn where your opponent does, but remember to realistic. If they are forming seals to use a raiton jutsu, why would you counter with fuuton? How did you know to do that in the short timeframe of handseals to execusion. You need to explain how you do what you do within the time frame. Does that make any sense? Lol