screen… ttys as window managers (1)
You either know it (in which case you probably will not bother to read on) or you must know it (and here I come to the rescue).
Open your terminal of choice (in my OS X interface I press Command-0, which invokes quicksilver and then 'it <ret>', with which I get an iTerm instance). Then type
and a help text appears, showing the usual GNU license text; press Return to continue. The screen blanks out as if you had just started your session.
You are in, this is the red pill. You will never want out.
Screen is a fully-featured 'terminal' window ...