Goal: move a window into a new pane which is automatically split out horizontally beneath a working window. This way two related commands which were in separate windows can be viewed conveniently within the same window. http://man.openbsd.org/tmux.1 * List the windows with ctrl-b w * In this simple case all the windows have a single pane. Let us assume that the info we want is in 3 * In the window to which we want to move the pane ctrl-b :command-prompt join-pane -s 3