# TmuxOption.isUserOption

- **Module:** TmuxOption
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-swift/blob/f02a4668570e1cc5198c941413750e021f42c214/Sources/LibTmux/Options.swift#L54
- **Page:** https://libtmux.org/reference/swift/tmuxoption-isuseroption/

A user option — one whose name begins with `@`. tmux never interprets these, so they are the safe place to keep your own state on a server.