The f function used in Forsta Plus returns objects that have a lot of different useful methods depending on the question type. These methods can be used to reference the values, titles and answers to Forsta Plus questions. Some of these return strings and some return arrays of strings. Using these methods, you are able to write all sorts of scripts that access survey variables, modify them etc. For each of the methods described, examples are given in Applying the Methods on Different Types of Questions.
See also About the f Function for further details.