Level PID and alt PID, what's the difference?

[afaf]

I'm still waiting for someone to reply to another post, explaining how to set pid for these value. In the meanwhile can anyone explains me the difference between level pid and alt pid?

[alll]

level PID = PID controller for level, idem for altitude.
Read this:
http://en.wikipedia.org/wiki/PID_contro ... ative_term