yes it has :)
but that is ending the current inside (and not the all if I move the click mouse on the 3 changes x,y,z)
the cyclic Tab is the only great key (or future mouse click if this one can be possible :) (if not, that is not a big problem)

Another thing : what about pen Graphic's users when they want modify the x,y,z object ?
I don't find the Numeric panel?