here is the latest word version of the document that was published to the list (the GGF9 version was only PDF) with a 
few changes and comments.  

Change tracking is turned on.

I'll be glad to move them into the final version, please put it up on gridforge or send it to me directly. 

my main changes/comments were in sections

1.2
1.2.1
1.2.4.1 (comment, we need references here)
         (i.e. 1.2.4.2 makes references)
1.2.6.1 
1.5.2
3.4 (comment about AuthN of media data senders)
.