Well, I can't see how to
- access additional panels (only the bottom panel is visible, although I've created another at the desktop upper edge)
- alter the background colour of an additional panel (e.g. the one at the upper edge of the desktop)
- permanently add a widget to a panel (currently to the lower (the only visible) one)
- place an app (e.g. DiskFree) into the bottom panel
And these are only a few things that I've stumbled over in the first hour; presumably there are plenty of other (interesting
) surprises yet to be discovered.