To exit a screen and save any data changes, click OK. Changes in data are saved in RAM when the data screen is exited in this way. To exit a screen without saving the changes you have made, click Cancel. It should be noted that to save data to disk, it is necessary to use the File|Save Database option from the main menu (or the Save button on the toolbar, or the "Ctrl-S" shortcut keystroke) before exiting the program.