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The display
In the display you can read the respective task and further
information:
2!Indicator for the current training programme
2@Indicator for the already solved task
2#Calculation tasks to be solved
2$ Answer evaluation by means of stylized facial features:
normal face, there are no scheduled evaluations,
happy face, the answer is correct,
sad face, the answer is incorrect.
2%Answer indicator
2^Acoustic function indicator
2&Selected diculty level indicator