Self-explainable due to interactive examples.
Forgery-proof due to item generators. This unique technique generates for each participant an individual test version. This prevents forgery through sample solutions as well as learning effects due to repetition of tests.
Hardware-independent due to vector graphics. The presentation of each task adapts to the screen settings (resolution and proportion) of the participant, so that effects of differing hardware or online connections are avoided.
Accessible according to the regulations for users with disabilities.
