The example https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix/#scrolling-text-example requires the [ArduinoGraphics](https://github.com/arduino-libraries/ArduinoGraphics) library. The library is mentioned /linked in the text but it does not seem to be clear to users that they need to install that library; see https://forum.arduino.cc/t/example-sketch-not-compiling-due-to-missing-library/1297300/ Can you please provide a note about this in the document. Something like > The LED Matrix now supports printing characters via the [ArduinoGraphics](https://github.com/arduino-libraries/ArduinoGraphics) library which you need to install using the library manager.