Text variables can be any given string of letters. They usually contain answers to open ended questions. Text variables can be used in Lists, which can e.g.be filtered by those who were unhappy with a particular service (which they had previously indicated in a response to another question). Read more in Text Lists.
Furthermore, to enhance the ability to use text variables it can be useful to divide the text variables up into categories. Read more in Derived Categorical Variables based on text variables