O

off(bool) - member function in class Motor

Make the motor coast

on(char,unsigned int,bool) - member function in class Motor

Make the motor turn

open_file(string,File_mode,unsigned int) - member function in class Filesystem

Open or create a file on the NXT

OUT_A - field in enum Motor_port

OUT A

OUT_B - field in enum Motor_port

OUT B

OUT_C - field in enum Motor_port

OUT C