Controlling Stepper motor with wemos D1 mini using l298n motor controller

Need Help With My Project
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/*     Simple Stepper Motor Control Exaple Code
 *      
 *  by Dejan Nedelkovski, www.HowToMechatronics.com
 *  
 */
// defines pins numbers
const int stepPin = 3; 
const int dirPin = 4; 
 
void setup() {
  // Sets the two pins as Outputs
  pinMode(stepPin,OUTPUT); 
  pinMode(dirPin,OUTPUT);
}
void loop() {
  digitalWrite(dirPin,HIGH); // Enables the motor to move in a particular direction
  // Makes 200 pulses for making one full cycle rotation
  for(int x = 0; x < 200; x++) {
    digitalWrite(stepPin,HIGH); 
    delayMicroseconds(500); 
    digitalWrite(stepPin,LOW); 
    delayMicroseconds(500); 
  }
  delay(1000); // One second delay
  
  digitalWrite(dirPin,LOW); //Changes the rotations direction
  // Makes 400 pulses for making two full cycle rotation
  for(int x = 0; x < 400; x++) {
    digitalWrite(stepPin,HIGH);
    delayMicroseconds(500);
    digitalWrite(stepPin,LOW);
    delayMicroseconds(500);
  }
  delay(1000);
}

I am using now A4988 stepper driver to control stepper motor
From this code I can successfully run stepper left right after delay using uno …

However I cant understand which pin ( Direction or step ) you have used in your code

pinMode(3, OUTPUT);
pinMode(1, INPUT_PULLUP);

this is the code you have attached …

What is 3 and 1 represent here…
Also tell me which stepper controller you have used …

If possible pls reply as quickly as possible
Awaiting for your kind response…