Stepper Object and setSpeed() function.

Hi all,
I want to activate my stepper motor,
my question is which of the pins i entered in “Stepper (stepNum,pin1,pin2,pin3,pin4)”
sends the steps signal?
i started with just two pins - steps and direction.
i can see that the direction really changes every 5 sec. (as written in the code)
yet i dont get any signal on any other pin…

i wrote the follwing code to begin with:
#include <Stepper.h>

int stepPin = 13;
int directionPin = 11;
Stepper motor (200, stepPin, directionPin,8,9);

void setup() {
Serial.begin(9600);
}

void loop()
{
digitalWrite(directionPin,HIGH);
motor.setSpeed(50);
delay(5000);

digitalWrite(directionPin,LOW);
motor.setSpeed(5);
delay(5000);
}// loop ends