I just tried giving that to Interface Builder. Apparently, toolbars can only be on the horizontal in Cocoa Touch. But this is an interesting start.

The problem of how to make rio work on a small device still exists. How about replace rio with a two-fold environment:

1) Window Choosing/Managing. If you click a window, you can either bring it up or move/resize.

2) Window: When you choose to bring up a window, you can work in that window. There should be a Zoom/Pan button which will allow you to modify the area you work in for higher visibility in larger windows.