how to swap a vertical split? moving left pane to the right

prefix in my case Ctrl + a then { or }

join two panes (tabs) in a single split pane join-pane -s :2 -t :1 -h -s source -t target -h horizontal

separate split into independent windows

• Ctrl-a !

how to save a running session so they re open?

how to clone a tab? how are tabs called in tmux?