screen

[Andrew Schulman]

> detaching from the session. At least for remote logins this is very
> useful. It is quite convenient to jump directly to pine, mutt or whatever
> you have running in one screen session instead of cycling through many
> xterms and trying to find the right one.

Good point.  It's especially useful with flaky connections, where your jobs 
will stay running even when the terminal goes down.  Then you just log in 
again, restart screen, and you're right back where you were.