How do you implement a script like this one...

Hi guys,

I've been wanting to implement a script like AutoType.cs found here:

http://wiki.unity3d.com/index.php/AutoType

However, I am too noob to understand how you would use something like this though.

Could anyone explain the process of what scripts you would attach where and what values get passed to who to get this to type out in a GUI Rect?

Thanks in advance!

For your convenience, here is AutoType.cs:

 using UnityEngine;
 using System.Collections;
  
 public class AutoType : MonoBehaviour {
  
     public float letterPause = 0.2f;
     public AudioClip sound;
  
     string message;
  
     // Use this for initialization
     void Start () {
         message = guiText.text;
         guiText.text = "";
         StartCoroutine(TypeText ());
     }
  
     IEnumerator TypeText () {
         foreach (char letter in message.ToCharArray()) {
             guiText.text += letter;
             if (sound)
                 audio.PlayOneShot (sound);
                 yield return 0;
             yield return new WaitForSeconds (letterPause);
         }      
     }
 }