Ask YC: Agile Documentation?

We're an agile shop. We've finalized what our initial architecture will look like and now we need to document the decisions leading up to the architecture and discuss RTO, RPO, etc.

Something like IEEE 1471-2000:

http://standards.ieee.org/reading/ieee/std_public/description/se/1471-2000_desc.html

or an EA framework like TOGAF:

http://en.wikipedia.org/wiki/TOGAF

would be tough slogging.

I'm interested in hearing from others what they use. Sharing of templates even better!

My views on documentation are in close alignment to this post:

http://traceinthesand.com/blog/2006/08/25/architecture-documentation-courage-to-fly-in-the-face-of-convention/

Cheers