[2.0] How to wrap text in toolTip of Properties

hi, experts

I added a property with some <summary infor > in my Control like below:

Code:

---

/// <summary>
/// Added by fifo
/// Return a string.
/// </summary>
public string myText
        {
            get
            {
                return myText;
            }
        }

---

Then, i press F6 to build my project. But when i use this property in Code , this tooltip for this property show in line, like below

[Added by fifo Return a string.]

I want to wrap this text, but i dont know How.

pls, show me.