How do I control the SHDN (shutdown) flag on the TinyScreen? I need to turn it off when the I put the Arduino into sleep mode. Any code examples?

Thanks

There is a great library to put boards using the SAMD21 into sleepmode that may assist you with the TinyScreen+. I would advise you to look at the SleepRTCAlarm example located within this library: https://github.com/arduino-libraries/RTCZero