Online QML documentation has inexplicit formatting

In the online QML documentation, e.g. for Rectangle here
http://doc.qt.nokia.com/4.7-snapshot/qml-rectangle.html
some properties are shown in a gray indented box (gradient, radius, and smooth
in the case of the Rectangle) without any obvious meaning. Is this a failed attempt
at listing the properties in two columns?
This was seen using Firefox 3.5.9 on Ubuntu.