The text for open-ended questions may be stored in columns allocated in the .dat file, or as a line of unlimited length in the .dau file. Text in the .dat file is typically used for responses that will not be coded, such as names and addresses. When open-ended responses are to be coded, the text is typically stored in the .dau file, and columns are allocated in the .dat file for the responses that will be defined later. In2form allocates columns in the .dat file for all open-ended text, but when the option to export source files is being used, these columns are blank and the names of the source files are stored in the .dau file, ready for transcribing.