diff --git a/develop/doc/_sources/howto/read_source.md.txt b/develop/doc/_sources/howto/read_source.md.txt
index e4211abb3be9cace80bc14dbe3db3e0a31221dd0..31987920f32f217ac2db42548874cfe7da57dd72 100644
--- a/develop/doc/_sources/howto/read_source.md.txt
+++ b/develop/doc/_sources/howto/read_source.md.txt
@@ -26,16 +26,16 @@ sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.001)
 sgd_optimizer.minimize(avg_cost)
 ```
 
-- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93)
-- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py)
+- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#)
+- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers)
   - Every Layer has one or more operators and variables/parameters
     - All the operators are defined at [`paddle/operators/`](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators). Other worth-looking files:
       - Base class: [`paddle/framework/operator.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h)
       - Operator Registration: [`paddle/framework/op_registry.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_registry.h) 
       - Operator Lookup: [`paddle/framework/op_info.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_info.h)
 - Optimizer: `fluid.optimizer.SGD`. It does the following
-  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py), [C++](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/backward.cc)]
-  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py), [C++](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/optimizer)]
+  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py)]
+  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py)]
 
 # Run Time
 
diff --git a/develop/doc/howto/read_source.html b/develop/doc/howto/read_source.html
index 6786b069fa3f922d5aa8ee89047dbc18df017268..adf950fcfdb6088b696e8d7ba35e94999e2a5513 100644
--- a/develop/doc/howto/read_source.html
+++ b/develop/doc/howto/read_source.html
@@ -231,8 +231,8 @@
 </pre></div>
 </div>
 <ul class="simple">
-<li>Variables: <code class="docutils literal"><span class="pre">x</span></code>,  <code class="docutils literal"><span class="pre">y</span></code>, <code class="docutils literal"><span class="pre">y_predict</span></code>, <code class="docutils literal"><span class="pre">cost</span></code> and <code class="docutils literal"><span class="pre">avg_cost</span></code>. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93">Python</a></li>
-<li>Layers: <code class="docutils literal"><span class="pre">fluid.layers.data</span></code>, <code class="docutils literal"><span class="pre">fluid.layers.fc</span></code> and <code class="docutils literal"><span class="pre">fluid.layers.mean</span></code> are layers. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py">Python</a><ul>
+<li>Variables: <code class="docutils literal"><span class="pre">x</span></code>,  <code class="docutils literal"><span class="pre">y</span></code>, <code class="docutils literal"><span class="pre">y_predict</span></code>, <code class="docutils literal"><span class="pre">cost</span></code> and <code class="docutils literal"><span class="pre">avg_cost</span></code>. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#">Python</a></li>
+<li>Layers: <code class="docutils literal"><span class="pre">fluid.layers.data</span></code>, <code class="docutils literal"><span class="pre">fluid.layers.fc</span></code> and <code class="docutils literal"><span class="pre">fluid.layers.mean</span></code> are layers. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers">Python</a><ul>
 <li>Every Layer has one or more operators and variables/parameters<ul>
 <li>All the operators are defined at <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators"><code class="docutils literal"><span class="pre">paddle/operators/</span></code></a>. Other worth-looking files:<ul>
 <li>Base class: <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h"><code class="docutils literal"><span class="pre">paddle/framework/operator.h</span></code></a></li>
@@ -245,8 +245,8 @@
 </ul>
 </li>
 <li>Optimizer: <code class="docutils literal"><span class="pre">fluid.optimizer.SGD</span></code>. It does the following<ul>
-<li>Add backward operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py">Python</a>, <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/backward.cc">C++</a>]</li>
-<li>Add optimizer operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py">Python</a>, <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/optimizer">C++</a>]</li>
+<li>Add backward operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py">Python</a>]</li>
+<li>Add optimizer operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py">Python</a>]</li>
 </ul>
 </li>
 </ul>
diff --git a/develop/doc_cn/_sources/howto/read_source.md.txt b/develop/doc_cn/_sources/howto/read_source.md.txt
index e4211abb3be9cace80bc14dbe3db3e0a31221dd0..31987920f32f217ac2db42548874cfe7da57dd72 100644
--- a/develop/doc_cn/_sources/howto/read_source.md.txt
+++ b/develop/doc_cn/_sources/howto/read_source.md.txt
@@ -26,16 +26,16 @@ sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.001)
 sgd_optimizer.minimize(avg_cost)
 ```
 
-- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93)
-- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py)
+- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#)
+- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers)
   - Every Layer has one or more operators and variables/parameters
     - All the operators are defined at [`paddle/operators/`](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators). Other worth-looking files:
       - Base class: [`paddle/framework/operator.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h)
       - Operator Registration: [`paddle/framework/op_registry.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_registry.h) 
       - Operator Lookup: [`paddle/framework/op_info.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_info.h)
 - Optimizer: `fluid.optimizer.SGD`. It does the following
-  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py), [C++](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/backward.cc)]
-  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py), [C++](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/optimizer)]
+  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py)]
+  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py)]
 
 # Run Time
 
diff --git a/develop/doc_cn/howto/read_source.html b/develop/doc_cn/howto/read_source.html
index 197dd06aac13877de46056793fbaaa872c9d3217..9823bef47dec3050a2bd8d3af3c3b1bd6b80411b 100644
--- a/develop/doc_cn/howto/read_source.html
+++ b/develop/doc_cn/howto/read_source.html
@@ -244,8 +244,8 @@
 </pre></div>
 </div>
 <ul class="simple">
-<li>Variables: <code class="docutils literal"><span class="pre">x</span></code>,  <code class="docutils literal"><span class="pre">y</span></code>, <code class="docutils literal"><span class="pre">y_predict</span></code>, <code class="docutils literal"><span class="pre">cost</span></code> and <code class="docutils literal"><span class="pre">avg_cost</span></code>. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#L93">Python</a></li>
-<li>Layers: <code class="docutils literal"><span class="pre">fluid.layers.data</span></code>, <code class="docutils literal"><span class="pre">fluid.layers.fc</span></code> and <code class="docutils literal"><span class="pre">fluid.layers.mean</span></code> are layers. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/layers.py">Python</a><ul>
+<li>Variables: <code class="docutils literal"><span class="pre">x</span></code>,  <code class="docutils literal"><span class="pre">y</span></code>, <code class="docutils literal"><span class="pre">y_predict</span></code>, <code class="docutils literal"><span class="pre">cost</span></code> and <code class="docutils literal"><span class="pre">avg_cost</span></code>. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#">Python</a></li>
+<li>Layers: <code class="docutils literal"><span class="pre">fluid.layers.data</span></code>, <code class="docutils literal"><span class="pre">fluid.layers.fc</span></code> and <code class="docutils literal"><span class="pre">fluid.layers.mean</span></code> are layers. <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers">Python</a><ul>
 <li>Every Layer has one or more operators and variables/parameters<ul>
 <li>All the operators are defined at <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators"><code class="docutils literal"><span class="pre">paddle/operators/</span></code></a>. Other worth-looking files:<ul>
 <li>Base class: <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h"><code class="docutils literal"><span class="pre">paddle/framework/operator.h</span></code></a></li>
@@ -258,8 +258,8 @@
 </ul>
 </li>
 <li>Optimizer: <code class="docutils literal"><span class="pre">fluid.optimizer.SGD</span></code>. It does the following<ul>
-<li>Add backward operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py">Python</a>, <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/backward.cc">C++</a>]</li>
-<li>Add optimizer operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py">Python</a>, <a class="reference external" href="https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/optimizer">C++</a>]</li>
+<li>Add backward operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py">Python</a>]</li>
+<li>Add optimizer operators. [<a class="reference external" href="https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py">Python</a>]</li>
 </ul>
 </li>
 </ul>