Display window information
help
// what it does
Flashes a short status-line message describing the current window — its index and name, size, and the active pane and session. It's a quick sanity check when a pane looks wrong, without opening copy mode or running a full tmux info.
// shortcut
Ctrl + bi
// gotcha
The message only stays in the status line for a couple of seconds (set by the display-time option), so glance down right after you press the key.