void setup () {
  pinMode(13, OUTPUT); //Set pin 13 as output 
}

void loop() {
 // Fast Blink
 digitalWrite(13, HIGH); //Turn the LED on
 delay(200);             //Wait for 200 milliseconds
 digitalWrite(13, LOW);  //Turn the LED off
 delay(200);             //Wait for 200 milliseconds

 //Slow Blink
 digitalWrite(13, HIGH); //Turn the LED on
 delay(1000);            //Wait for 1 second
 digitalWrite(13, LOW);  //Turn the LED off
 delay(1000);            //Wait for 1 second
}