Minimizing to tray?

I once hit a hotkey and somehow minimized SmartFTP to the tray... I'd always assumed that feature never existed. Once I accidently did it, I was unable to find out what I had done....

So the question is, how do you minimize SmartFTP to tray?

^__^ Thanks in advance!

tool -> settings -> display -> add to systray on minimize

or

just press shift while clicking on the minimize button in the title bar.

Awesome Worked like a charm! Thanks, eyebex! ^__^