These relate to the properties for Source Interactions only.
Inge advises that Show nr of participants is inaccurate and should read Show nr of attempts.
In the Language Options the Questions Specification Title also looks inaccurate. Instead of Specification is may be more accurate to call this "Breakdown of grades" and change the default. As far as I can gather this title is displayed above a breakdown of the grades for a grouping of pages.
These relate to the properties for Source Interactions only.