Revision Properties — An application can set arbitrary per-revision key/value pairs to store app-specific data.
API versioning — breezy API versioning.
Apport error reporting — Capture data to report bugs.
Authentication ring — Configuring authentication.
Bundles — All about bzr bundles.
Container format — Notes on a container format for streaming and storing Bazaar data.
Groupcompress — Notes on the compression technology used in CHK repositories.
Indices — The index facilities available within breezy.
Inventories — Tree shape abstraction.
LCA merge — A nice new merge algorithm.
Network protocol — Custom network protocol.
Plugin APIs — APIs plugins should use.
Repositories — What repositories do and are used for.
Repository stream — Notes on streaming data for repositories (a layer above the container format).
Bazaar and case-insensitive file systems — How Bazaar operates on case-insensitive file systems such as commonly found on Windows, USB sticks, etc.
Development repository formats — How to work with repository formats that are still under development. Contains instructions for those implementing new formats, of course, but also for (bleeding-edge) end users of those formats.
Knit pack repositories — KnitPack repositories (new in Bazaar 0.92).
Format feature flags — Allow extending formats with optional features. (new in Bazaar 2.5).