I have used this ever since Apple discontinued its own drop-down hierarchical file navigation system, and by now I coudn't function without it. By simply clicking the mouse ONCE, and holding it down, you can navigate up and down anywhere you want, through your entire hard drive, into folders and out of them again, until you find what you need.

You can no longer do this with the Mac OS as Apple constantl dreams up new, ever more cumbersome and wrist-breaking ways to navigate through the file system.

Apple made a terrible mistake when it discontinued this wonderful drop-down menu system, and Sig Software deserve a lot of credit for bringing it back. I couldn't live without it.