The self-designed program keys mentioned in the instruction manual of Dongling bread maker should refer to various keys that can be set according to your own needs, such as "time", "weight", "baking color" and "menu". For example, you want to set an appointment delay procedure. Then set the time when you want to bake the bread. At this time, you need to press the program of "baking color", "weight", "time" and "start".