Auto Typing Text

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var letterPause = 0.2;
var sound : AudioClip;
 var myText : String = "testtttttttttt" + "\n" + "testttttttttttttt";

function Start () {
    TypeText ();
}

function TypeText () {
    for (var letter in myText.ToCharArray()) {
        guiText.text += letter;
        if (sound)
            audio.PlayOneShot (sound);
            yield WaitForSeconds (letterPause);
    }
}