# WindowPlan.windowIndex

- **Package:** TmuxWorkspace
- **Language:** Swift
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-swift/blob/7993e7044347629b08020e9b02ae8bcffa0e5898/Sources/TmuxWorkspace/Workspace.swift#L81
- **Page:** https://libtmux.org/en/swift/latest/workspace/reference/windowplan-windowindex/

Explicit session-local index; omitted indexes use tmux's next slot.