Love redux but needs some help

Got to say redux rocks! But needs some help. So i will drop my questions here and hope somebody can help me.

Can somebody explain what the difference is between note off/on keyzones? And in what context you too use it?

Thx!

If you assign a sample a keyzone in note off layer, it will play when the assigned key has been released (no longer held down) aka Note off

Note on keyzones are for triggering samples when you press a key
Note off keyzones trigger samples when the key is no longer held down.

Can be useful for realistic sampling of instruments and so on, there is often a sound when you stop playing a note on instruments