# LibTmux.FSharp.SplitSpec.Size

- **Module:** LibTmux.FSharp
- **Package:** LibTmux.FSharp
- **Language:** F#
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux.FSharp/Spec.fsi#L26
- **Page:** https://libtmux.org/en/fsharp/latest/reference/libtmux-fsharp-splitspec-size/

```
Size: SplitSize option
```

The pane's size, such as <c>SplitSize.Cells 20</c> or <c>SplitSize.Percent 30</c>; tmux splits in half when None.