GUIStyle.wordWrap
var wordWrap: bool;
bool wordWrap;
wordWrap as bool
Description

Should the text be wordwrapped?

This will cause any text contrained to be wordwrapped to fit within the width of a control.
	function OnGUI() {
		GUI.skin.button.wordWrap = true;
	}
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void OnGUI() {
        GUI.skin.button.wordWrap = true;
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def OnGUI() as void:
		GUI.skin.button.wordWrap = true