Spec: <System name>

Short picture
- 1-2 sentences: Why is this system important in the project?

## What it is
- ...

## What it is not
- ...

## Why
- ...

## Structure
- ...

## Roles
- ...

## Interfaces
- ...

## Current state and target picture
- Current state:
  - ...
- Target picture:
  - ...

## Parent systems
- ...

## Child systems
- ...

## Related systems
- ...

## Sources
- ...