I have a motor driver fitted to the board, and 2 motors connected to the 2 sets of motor pins. These motors are driven in the code using low 4 : high 5 : high 6 : low 7.
I have a servo fitted to pin 0, and some led's fitted to pins 1, 2, and 3.
This all works fine, and it does what I want.
There are "vacant" digital output pins, which are numbered on the board 4, 5, 6 and 7, which are the same numbers that the motors use.