what is power beyond? + spoole valves

[wedge40]

Here is one of the better drawings I have seen. Basic Hydraulic System

This exactly what I've been looking for. This re-affirms what I was thinking and clears a couple of things up.
Thanks.

Wedge

 

[subzero]

that is a good drawing ... BUT usually the 3 point hitch is the last system inline ... so the last set of spools must be with power beyond...