Shorthand for empty content.
    // Draws a button without any text.
    function OnGUI () {
        GUI.Button (Rect (0, 0, 100, 20), GUIContent.none);
    }
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour { void OnGUI() { GUI.Button(new Rect(0, 0, 100, 20), GUIContent.none); } }