From e95e1eac772376d04517b9b334a221637b87595a Mon Sep 17 00:00:00 2001
From: 949478479 <949478479@qq.com>
Date: Wed, 23 Dec 2015 13:31:25 +0800
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---
 source/chapter2/13_Inheritance.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/chapter2/13_Inheritance.md b/source/chapter2/13_Inheritance.md
index 67089fe5..91e9d5c6 100755
--- a/source/chapter2/13_Inheritance.md
+++ b/source/chapter2/13_Inheritance.md
@@ -198,6 +198,7 @@ print("Car: \(car.description)")
 // Car: traveling at 25.0 miles per hour in gear 3
 ```
 
+<a name="overriding_property_observers"></a>
 #### 重写属性观察器（Property Observer）
 
 你可以通过重写属性为一个继承来的属性添加属性观察器。这样一来，当继承来的属性值发生改变时，你就会被通知到，无论那个属性原本是如何实现的。关于属性观察器的更多内容，请看[属性观察器](../chapter2/10_Properties.html#property_observers)。