x degree stepper

ballendo@...: "Full steps CAN be made with one coil on. It is
called wave drive. If you picture a very simple motor:
...you can see that sending current to single coils in a
1,2,3,4,1,2,3,... pattern will cause the rotor to turn CW. To
reverse, it's 4,3,2,1,4,3,2... This is full step operation"

So how does one get 200 steps per revolution?