Hey, all!

I've got an SL-5500 running OZ 3.3.5 connected to my Linux box with a USB sync cradle, and I'm trying to kick off my rsync backup script when I hit the 'Sync' button. Trouble is, I can't figure out what the Sync button does. When I hit it, my Zaurus brightens up, so it would seem to register as a keypress combination or somesuch to the Z. Anybody know what hitting the Sync button does, exactly?