# types.FormatSubscription.scope

- **Module:** types
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-ts/blob/073b9d7dedad900bff6f5ec0ea47794e40225870/packages/libtmux/src/types.ts#L892
- **Page:** https://libtmux.org/en/ts/latest/reference/types-formatsubscription-scope/

What the format is expanded against. Omitted expands once per session.

A window or pane id subscribes to that object; `"all-panes"` and
`"all-windows"` subscribe to each one in the attached session, reporting
separately for each.