# LibTmux.Window.EntityKey

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** C#
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux/Window.Relations.cs#L75
- **Page:** https://libtmux.org/en/csharp/latest/reference/libtmux-window-entitykey/

Gets the session, window and index this handle names together.

tmux can link a window at several indexes in one session, so the session
and window identifiers alone do not name a place in the hierarchy.