Microwave oven controlling button?

i want to know some standard controlling buttons on the control panel of a normal microwave oven and their usage, thank if you have some image to share with meMicrowave oven controlling button?
The basic microwave oven has controls for the cook timing (turns the oven off after a specified cook time), cook level (varies the duty cycle of the magnetron), and for setting the clock to standard local time.





WKMicrowave oven controlling button?
varies from model to model and brand to brand