# Libtmux.Plan.panes

- **Module:** Libtmux
- **Package:** libtmux
- **Language:** OCaml
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-ocaml/blob/205dfda49742592b479247049d186956e4a4cfe9/lib/libtmux.mli#L670
- **Public owner:** Libtmux
- **Page:** https://libtmux.org/en/ocaml/latest/reference/libtmux-plan-panes/

```
val panes : ?pushdown:pushdown -> Pane.t Expr.t -> (t, Error.t) result
```

Plan without I/O. Exact lowering covers pane active/dead flags and complete Boolean combinations. Unsupported children prevent lowering the whole expression, including under OR and NOT. Relationships always stay local. `Require_exact` rejects an unsupported expression before acquisition.

## Parameters

- `pushdown?` (`pushdown`)
- `arg1` (`Pane.t Expr.t`)

## Guides

Pages that discuss `panes`.

- [Query captured data](/en/ocaml/latest/guides/queries/)