Hardware: M5Paper, USB-C cable, PC with Arduino IDE. 2. Setup: Install M5GFX library. In setup(), initialize display with M5.disp.begin(). 3. Code: Create a frame buffer. Use disp.setWindow() to define a specific area. Call disp.pushWindow() to send data. 4. Driver Management: Access IT8951 registers via I2C/SPI if needed to force 'DU' (Direct Update) mode for fast updates without black flash, or 'GC' (Global Clear) for full cleanup. 5. Verification: Measure refresh time using micros(). Compare full refresh (slow, ~1s) vs partial (<100ms). 6. Deep Dive: Implement a command queue to avoid bus conflicts during simultaneous updates of the screen and GT911 touch interface.