- Add introduction section (1 page), essentially a condensed form of an earlier intro. - Updated contents section. - Removed left-over text from earlier documents.
- Add introduction section (1 page), essentially a condensed form
of an earlier intro.
- Updated contents section.
- Removed left-over text from earlier documents.

No spec changes.

R=r
DELTA=379  (147 added, 227 deleted, 5 changed)
OCL=21312
CL=21331

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go