An Essay exercise looks like this:
The essay question type can be used with or without a solution. When a solution Definition is provided, the answer of the student will be checked according to the specified evaluation type.
When no solution is provided, the student is able to grade their own answer after asking for a solution. In a test, the answer is always graded with 0 points and the teacher should grade the exercise manually to assign points.
At essay, you can chose 3 methods for evaluation.
None, you leave the definition field empty.
You look for an exact match, with evaluation type similar text.
With a regular expression you recognise patterns, evaluation type text regex.
Example: when creating a new exercise, choose Template: essay - regex at the bottom