Answer that there is good vendor participation and interest in the work. Explanation regarding initializing the content of a workspace. Response was that the history resource on the server is used to show how resources are 'shared' between distinct URLs, and could use e-tag etc. to determine equivalence on the client. Observation that collaborating machines across the world could use the protocol for distributed systems. The working group compared many different VCM systems when designing the protocol.
Nothing is publicly available.
Deleting a revision is left server defined. Agreed that this will be an interop issue. Observation that the goals are ill-defined in the protocol document. A different response was that ACLs will allow broader access to storing the state of the web, with restricted visibility of history. Observation that versioning the 'active web' would be possible, i.e., running programs on distributed systems, SNMP, or router.