A comment question (like the open question) is a question where the respondent is not bound by answer categories to give his answer. The only difference is that the respondent has more space to define his answer than with the open question. You choose this question type when you expect an elaborate answer. As with the open question, you can enter a text in the textbox that can provide an additional direction for the respondent.
You can set two properties for the comment question. Both properties define the space that is presented to the respondent to enter his question. The first property defines the width (in characters) of the textbox, the second one the height (in lines). When creating a comment question, these values are, by default, set to 50 (width) and 3 (height).
Figure 5: Example of comment question.