13. Where to go next

• The Cook Standard is the authoritative language and execution specification (RFC-2119, with a formal grammar appendix).
• The runnable examples are arranged in learning order.
• CONTRIBUTING.md covers building and testing cook itself.

Some surface is reserved but not yet shipped (// root-anchored targets and cross-probe member joins among them), and cook rejects those with a clear error rather than guessing. When in doubt, cook --help, cook why, and cook emit-lua will tell you what cook actually thinks it’s doing.