Take a look at

http://qt-project.org/doc/qt-5/qtsensors-index.html
http://qt-project.org/doc/qt-5/qtpositioning-index.html
http://qt-project.org/doc/qt-5/qtnfc-index.html

Notice how the inconsistent the content/style of the page is.

Sensors has no Getting started section, and the class overview is in a two column table (description to the right). Wording and structure different to the other two.

Positioning has a Getting started, mentions both QML and C++, and the class overview is a triple column table (description to the left)

NFC has a Getting started, but mentions only QML, and the class overview links are in a list.