# libtmux::SplitOptions::horizontal

- **Module:** libtmux::SplitOptions
- **Package:** libtmux-cxx
- **Language:** C++
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-cxx/blob/85e8bd603a322dc32bb8b9aeb1a72bcf36945f1d/include/libtmux/entities.hpp#L68
- **Page:** https://libtmux.org/reference/cxx/libtmux-splitoptions-horizontal/

Side by side. tmux stacks by default.