Chef Green is a program that comes with the rice cooker. Once you start cooking, the program will tell you when to add water and how many more minutes to cook your rice until it's done. The chef green also tells you about the food nutrients contained in your food such as carbohydrates, proteins and fats content. There is also an option in case if you are not interested of all this features so that you can select what kind of information that comes out for each product (protein, carbs and fat)
You have no space for the rice anymore but just keep boiling your soup!