# types.SplitOptions

- **Module:** types
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** interface
- **Source:** https://github.com/libtmux/libtmux-ts/blob/3fe1ca654b81b8cbf4a13b777a001a3298c87a6f/packages/libtmux/src/types.ts#L247
- **Page:** https://libtmux.org/en/ts/latest/reference/types-splitoptions/

Which side the new pane takes, how big it is, and what runs in it.

Without a size tmux halves the pane it splits.

## Members

- `environment` (property): Variables to set in the process this starts, tmux's `-e`.
- `size` (property): How big the new pane is, tmux's `-l`.
- `direction` (property): Which side of this pane the new one takes.
- `startDirectory` (property)
- `shellCommand` (property): A command for tmux to run in place of the default shell.
- `vertical` (property)