# Documentation

One page per migration topic, each showing the Jackson 2 and Jackson 3 output
side by side.

- [S01 — Mapper construction and immutability](s01-mapper-construction.md)
- [S02 — The exception hierarchy](s02-exception-hierarchy.md)
- [S03 — Custom serialiser and deserialiser renames](s03-custom-handlers.md)
- [S04 — Modules, records, Optional and dates](s04-modules-and-records.md)
- [S05 — Default typing](s05-default-typing.md)
- [S07 — Defaults that flipped silently](s07-defaults-that-flipped.md)
- [S06 / S08 — Coexistence and wire-format equivalence](coexistence.md)

Raw stdout for every program is in [`output/`](output), regenerated by
[`../run-all.sh`](../run-all.sh).