Symbol: DEFAULT_EMPTY_MENU
usr.bin/tmux/key-bindings.c
557
"bind -n MouseDown3Empty { display-menu -t= -xM -yM -T '#[align=centre]#{window_index}:#{window_name}' " DEFAULT_EMPTY_MENU " }",
usr.bin/tmux/key-bindings.c
558
"bind -n M-MouseDown3Empty { display-menu -t= -xM -yM -T '#[align=centre]#{window_index}:#{window_name}' " DEFAULT_EMPTY_MENU " }",