The activity is in the subsection Basic - Loops.
In the loop, the number of repetitions is given by the numeric range [a; b]. Each time the loop is entered, the counter changes to 1. When b is reached, the loop stops.

The activity in properties must include:

• "From" — range start;
• "To" — end of range;
• "Index" — a variable to store the number of the current iteration.

If a range is specified for a<b, index increases by 1 each time, for a>b — decreases.