GUIText.tabSize

The tab width multiplier.

This is multiplied with the tab width defined in the font.

JavaScripts

guiText.tabSize = 4.0;

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void Awake() {
guiText.tabSize = 4.0F;
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def Awake():
guiText.tabSize = 4.0F