[er7-redact](../index.md) → docs
# Documentation
| [usage](usage/index.md) | the walk-through: from a message you cannot share to one you can |
| [policies](policies/index.md) | the policy file format, the actions, and the built-in tables |
| [api](api/index.md) | every public item, and where it is specified |
| [faq](faq/index.md) | the questions the other three raise |
These pages are **derived**. The normative text is
[`spec/`](../spec/index.md); where a page here disagrees with the spec, the
spec is right and the page is a bug.
For runnable versions of the same material, see
[`examples/`](../examples/README.md). For how the code is written and
changed, see [`AGENTS/`](../AGENTS/README.md).