# User Guide Overview
- **DigitalTwin** orchestrates `Network`, `Environment`, `PropagationModel`.
- **Network / WirelessNode**: topology & radio properties.
- **PropagationModel**: FSPL, shadowing/fading, RIS.
- **Simulation/Scenarios**: move nodes, set power, RIS beam.
- **Optimization**: greedy, grid search, BayesOpt, GA, Pareto.
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