The data file contains all the information that you have entered in Roll Call. Since this file contains all your work, make sure you know the name and location of it and that you back it up regularly.
The data file is comprised of two files: the 4D data file and the rollcall.journal file. The 4D data file name will end with the extension 4DD. The name and location of your data file is found by selecting Help>About Roll Call.
