# Core Context

Open one leaf whose dominant need matches the task.

| Need | Open | Do not open |
|---|---|---|
| Understand register ownership and factorization | [Register model](register-model.md) | Editing operation dispatch or metadata queries |
| Look up register operation behavior and failure boundaries | [Register operations](register-operations.md) | Backend capability or zoo catalog work |
| Look up tags, queries, buffers, and wait semantics | [Metadata and waits](metadata-and-waits.md) | Quantum-state operations or transport routing |
| Understand event scheduling and resource coordination | [Discrete events](discrete-events.md) | Pure data-model or backend-dispatch tasks |
