Gen-ART 8

From: Mary Barnes

Description: Section 4.2: needs normative language - i.e.:  --"Each Usage needs to …" ->  "Each Usage MUST…"

Notes: In fact I think that 4.2 (now 5.2) is not normative either, i.e. RFC 2119 applies only starting with the "Overlay Management Protocol" section.  Will move the "RFC 2119 Terminology" section to the right place.