# Docs
## Scope
Design and API documentation for `include_md`.
### Responsibility Table
| `api/` | Public macro API contracts |
| `feature/` | User-facing design rationale |
| `invariant/` | Behavioral constraints and NFR contracts |
| `entities.md` | Master index of all doc entity types and instances |
| `doc_graph.yml` | Cross-reference graph for all doc instances |