By default, when sending data to a .csv file, Kiosk Pro automatically creates a line break after each 'writeToFile' call so the easiest way to create line breaks is just to make multiple calls, one for each line.
It's also possible to add line breaks between data sets within a single call by adding a specific character code. This demo takes two strings and submits them with a line break in between in a single 'writeToFile' call.