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Issue – DP5: State and Policy Manipulation Protocol(s) Option 1: Syntactic (i.e. basic operations, with variable and data provided upon invocation) Allows for extensions to data model without impacting protocol More suitable for Conference Template since it’s intended to be extended. Server generally has to infer intent from data content rather than via direct signalling Processing overhead Interpretation may result in interoperability issues Poorly suited for “compound operations” such as moving objects |