Use of -Y in ssh

[Bill Moran]

I'm looking for information on ssh.  What I want to understand is the
difference between -Y and -X.

The man page for ssh simply says:
-Y      Enables trusted X11 forwarding.

Does anyone have any pointers to docs that better explain the difference
between -Y and -X, I'd like to better understand the security risks that
may be involved.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com