What are the functions of the buttons on the Xiaomi Electric Pressure Cooker 4.8L?

For your reference, here are the main functions of the buttons on the Xiaomi Electric Pressure Cooker 4.8L:
1. Cancel button:
(1). During the cooking process, press the Cancel button to cancel the current cooking program;
(2). In reservation mode, press the Cancel button to cancel the current reservation status;
(3). In keep warm mode, press the Cancel button to cancel the current keep warm status.
2. Select/Start button:
(1). Press the Select/Start button to cycle through and choose the cooking mode. The cooking modes are sequential: Soup Broth, Rice, Poultry Meat, Stew Meat, Congee, and Slow Cook;
(2). Press and hold the Select/Start button to begin cooking in the currently selected mode;
(3). In reservation setting mode, press and hold the Select/Start button to begin cooking with the reserved mode.
3. Timer button:
(1). Press the Timer button to enter the reservation setting mode;
(2). In reservation setting mode, press the Timer button to adjust the reservation duration in 15-minute increments;
(3). In reservation setting mode, press and hold the Timer button to adjust the reservation duration in 30-minute increments.
4. Taste button:
(1). Press the Taste button to cycle through pressure levels, increasing until it reaches the maximum value, then resets to the lowest. Pressure levels change accordingly;
(2). The taste levels are Soft, Med, and Hard, with pressure levels ranging from P2 to P8.