This is an old revision of the document!
Edit:
Since A.C. has returned his study guide to the web, he has requested that this page be removed.
You can find his restored guide here:
http://xenogearsxenosagastudyguide.blogspot.com/
You can find general information on Grahf elsewhere:
http://xenosaga.wikia.com/wiki/Grahf
https://en.wikipedia.org/wiki/Characters_of_Xenogears#Grahf