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4 Exercise structure

Exercises are composed by blocks which can contain different questions. The main struture of a an exercise file is then:

block1 - question 1 question 2 ... question k1 block2 - question 1 question 2 ... question k2 ... blockn - question 1 question 2 ... question kn

This is constructed by using statements that define the differents parts and options of the exercise. Every exercise has to start with block and end with endblock. The statement of the exercise is enclosed between statement and endstatement. Every question has to start with question and end with endquestion. Answers to questions can be optionally provided enclosing the answer between answer and endanswer. Blank lines and spaces are ignored except when they are in statement of exercises or questions. Any line that starts with # is considered a comment.