Jump Stop and the Pivot Foot

[bradriney]

I've been reading lots of the threads going back some time regarding jump stops, the pivot foot and traveling. Everyone has done a great job educating me on the specifics of traveling (NCAA and high school) so I don't have a question about the rules. What I do have a question about is a clarification to what appears to be "exceptions" to traveling with regards to establishing the pivot foot. And those are the parts of the NCAA definition relating to "jump stops".

Conceptually speaking, when executing these moves, is the established pivot foot actually being relocated, thus in reality creating a traveling violation or is there not a pivot foot established? Or is the parts of the rule relating to jump stops merely exceptions to what would be a travel because the pivot foot was relocated?

Hope my question is not too vague, it just appears the rules carve out certain exceptions for jump stop moves and I can't get my head around picturing the sequences and if there are pivots established or not.