1. In a text you can create links to fotenotes and sidenotes.
2. When clicking on a word or little button next to it, an informationbox shows or hides in the text. This informationbox makes it easy to give short background information to readers on a subject reffered too or about difficult concepts.
In the 3th paragraph click on the button behind "de cijfers" to toggle infobox
To read further click "Eerst verder lezen"
Then you will see more examples of sidenotes!