COMPUTER PROGRAMS FOR PROVIDING INFORMATION ABOUT, DISPLAYING AND PRINTING RECOMMENDED SERVING SIZES OF FOODS IN TERMS OF MASS AND VOLUME, FOR COMPARISON OF RECOMMENDED SERVING SIZES OF FOODS WITH FAMILIAR OBJECTS, FOR TESTING USER'S KNOWLEDGE OF RECOMMENDED SERVING SIZES OF FOODS AND FOR TRACKING SUCH TEST RESULTS DESIGNED TO ASSIST DIETERS OR ANYONE WHO TRACKS FOOD INTAKE IN CORRECTLY ESTIMATING PORTION SIZE