# types.NewSessionOptions.height

- **Module:** types
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-ts/blob/073b9d7dedad900bff6f5ec0ea47794e40225870/packages/libtmux/src/types.ts#L95
- **Page:** https://libtmux.org/en/ts/latest/reference/types-newsessionoptions-height/

Rows for the session's first window.

A detached session has no client to take its size from, so tmux gives it
80x24 and every program in it formats to that. Nothing can widen it
afterwards except [`Window.resize`](/en/ts/latest/reference/window-window-resize/), and a width-aware program has already
truncated its output by then rather than wrapped it.