DISPATCH #1 / SPLITTING PANES
Build your first reliable split-pane control room and lock in operator habits.
Panes are the atoms of tmux. At the lowest level, tmux manages individual panes. Usually you run a shell in a pane, but you don't have to. Any program that outputs text on stdout is fair game.
Splits can be horizontal or vertical. By default, a split divides the current pane in half. Use prefix " to split vertically, and prefix % to split horizontally.
A window contains multiple panes.