Data apps, compose or hand-build
What a data app is, the two ways to make one (composed from a description, or hand-built from the public template), and how a hand-built app calls functions and workflows.
The app manifest
Every field of bda.manifest.json, the declared queries, imports, chat, tabs, analyses, persistence and calendar, with the limits.
Publish, share and schedules
The states of an app version, what publishing changes, how sharing works, and how to email a picture of an app on a schedule.