I asked newly a question about the animation keys in the support section Greg.
I might have overlooked them . Going to the next and previous keyrame-frame isn't easy for me just now.
Actually i might ask for a little addition in the keyframe icon place (or close to it) for an "go to next-previous keyframe" in the animation features of every node.
That would be handy for me. But i don't know how others use that kind of workflow.
And Matt or Jo might not like that idea at all probably

It looks hard to do even from where i look at it.
Hopefully it isn't so hard as i think or it is somewhere somebody could show me.
Edit: I posted the last part from here on the mentioned thread.