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When a @Command@ has finished initializing, it calls "publish_service" to publish its service type (if it has a service type which might not be the case for a command line for example). This announcement makes the given command available for connections from remote objects. Messages received by the command are forwarded to the @Root@.

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A @Command@ serves as a some kind of tunnel for a given protocol. You can only register one @Command@ for a given protocol on a "":197 object. For example, you might have an @OscCommand@ responsible for the "osc" protocol, an @HTTPCommand@ for "http" and a @PipeCommand@ for "whatever". With these commands in place, any object in the tree can refer to remote objects via specific commands by sending message with the matching protocols. It is "":197's responsibility to pass the messages to the right Command.

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When a remote object connects to a @Command@, it is automatically registered in the list of "observers" (until the registration's time-to-live expires). All return values produced by calls to the @Root@ are sent to every observer of every @Command@.

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When a command receives a "reply" messages, it first tries to see if it has a root proxy registered for the same remote origin. If this is the case, it routes the reply message to the "root proxy":200 by calling @handle_reply@.. [remote] reply ---> Command ---> RootProxy.handle_reply !221!