from the instructions..
Numpad 4: Save Location - use this powerful option to save your XYZ location
in the game world. By using this and the Vault options, you can
get around pretty quickly or return to an area that you wish to get
to faster. Also this is useful to use at the end of Timed events
where you can redo the timed event and just teleport to the end to
complete it quickly.
I agree when jumping straight across a large area the float option would be super!