Figure 1.6a: Broadcast Unique/Unique Name Conflict A unique name may not be registered if another node already owns that unique name.	Figure 1.6b: Broadcast Unique/Group Name Conflict A unique name may not be registered if the same name is registered as a group name.
Figure 1.6c: Broadcast Group/Unique Name Conflict A group name may not be registered if another node already owns the name as a unique name.	Figure 1.6d: No Conflict when Joining a Group Any node may join a group. Existing group members will not respond to the registration request.

(Elvis is the name of a popular clone of the venerable 'vi' text editor.)