Emu XL-7 & MP-7 User's Group

Hi
has there been a tutorial on patchcords?
I've read the manual many times, i've tried experimenting on my own but 
i can't seen to figure out how patcthcords work ans how to get 
effective results even though they seen to be the core of the XL7 and 
seems to allow countless sound designing options.I've had my xl7 for a 
few years and i still haven't figured out what how to add up elements 
to radically change a sound.
Anyhow if there's somebody out there that can give me a few examples i 
have beat garden, techno synth yard, world expedion and X-lead
Thanx to you
dabeinest