# tmux_model:session_id/0

- **Package:** libtmux_erlang
- **Language:** Erlang
- **Kind:** typealias
- **Source:** https://github.com/libtmux/libtmux-erlang/blob/d1b6308440cf9eb8f6647e7ae434bce60e849368/apps/libtmux_erlang/src/tmux_model.erl#L41
- **Page:** https://libtmux.org/en/erlang/latest/reference/t-tmux_model-session_id-0/

```
-nominal session_id() :: binary().
```

A canonical session ID binary in the dollar namespace.