Topping a Plant from Clone?

Hi All,
Have a question about topping a plant from clones.
Once the clone is rooted and has grew a few nodes, how do you top it?
I'm new to cloning and have just started using the method with great success!
Can a cloned plant be topped due to the offset nodes?
If yes-How?????
Appreciate all advice on this matter :S5:

P.S. Some other sites have some real assholes on them and aren't worth even trying to ask a question! People just try to knock you-Thought these sites are to help others!!!!!!!!!!!!!!!!!