# Simulation Context

Open one leaf whose dominant need matches the task.

| Need | Open | Do not open |
|---|---|---|
| Compare implemented backend capabilities and gaps | [Backend support](backend-support.md) | General register API or protocol authoring |
| Add or repair a backend integration | [Backend extension](backend-extension.md) | Merely checking current support |
| Look up chronological evolution and background-noise rules | [Time and noise](time-and-noise.md) | Metadata, transport, or zoo catalog tasks |
