I too was thinking along the lines of "all messages from all clients are sent" and they all contribute, but whilst keeping Synergy 2's switchable master methodology. If we want to keep the master-client analogy and not broadcast to all clients, we could do:   - there is one shared mouse pointer - master = computer with shared mouse pointer within it's bounds - all clients send any input (mouse or keyboard) to this master (and keyboard input is only applied to the master as it