> ## Documentation Index
> Fetch the complete documentation index at: https://chart-spec.enchor.us/llms.txt
> Use this file to discover all available pages before exploring further.

# ChartCapabilities

```ts theme={null}
type ChartCapabilities = { readonly [feature in keyof typeof chartFormatCapabilities["chart"]]: FormatSupport };
```

What a chart format can store, and how: for each difficulty, once for the instrument, per note, or not at all.


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