# plan.ops.panes.SplitWindow.horizontal

- **Module:** plan.ops.panes.SplitWindow
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/8a648c0894dfffc9303583f753b6c8ae01f2fe76/crates/libtmux/src/plan/ops/panes.rs#L87
- **Page:** https://libtmux.org/reference/rs/plan-ops-panes-splitwindow-horizontal/

```
plan.ops.panes.SplitWindow.horizontal(mut) -> Self
```