Nano IOT 33 - Where are digital Pins 0 & 1?

Official Hardware Nano Family Nano 33 IoT
1

The documentation says the Nano 33 IOT has 14 digital pins (D0-D13?), but I can only find 12 (D2-D13). Where are D0 & D1?

2

They are the pins marked "TX1" (this is Arduino pin 1 and also the TX pin for Serial1) and "RX0" (this is Arduino pin 0 and also the RX pin for Serial1).