# Every kind of file, and why it exists

*Kind of page: reference; so is every page under files/.*

- [The aggregator's files](aggregator/README.md): what the analyst holds at the start of a run (the documents, the coders' package, the joined store, the forests, the tools), what it writes as its memory in `out/`, and the harness that runs it.
- [The handler's folder](handler/README.md): the protocol any handler of a run follows ([HANDLER.md](../../aggregator/handler/HANDLER.md)) and the scripts it runs before and around the analyst's work, with their paths set in one file.
- [The coder's files](coder/README.md): the coder instrument v32 (the contracts and the tools), a yard room, its run and its fleet, and the case lead's saved session.

How each side remembers across sessions: [the aggregator](../memory/aggregator.md), [the coder lead](../memory/coder-lead.md).