# types.FormatSubscription.scope

- **Module:** types.FormatSubscription
- **Package:** @libtmux/libtmux
- **Language:** TypeScript
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-ts/blob/2cb93308200da38a26b59876618116850f110607/packages/libtmux/src/types.ts#L576
- **Page:** https://libtmux.org/reference/ts/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.