QML tutorial is confusing to beginners

The current QML tutorial, located at http://doc.qt.nokia.com/4.7/gettingstartedqml.html can be very confusing to beginners as it currently is.
The tutorial omits code in an unclear way, and additionally the very first block of code is missing entirely.

As an example, the way the menu bar is implemented is currently very unclear, as it is shown in the tutorial without mention of how it was created. It is possible to piece together the process based on previous parts of the tutorial, but the tutorial is currently needlessly difficult to follow.