diff --git a/programming/usecases/read-postal-codes.md b/programming/usecases/read-postal-codes.md
index b7ef309e..766a5734 100644
--- a/programming/usecases/read-postal-codes.md
+++ b/programming/usecases/read-postal-codes.md
@@ -115,40 +115,40 @@ do{
 
   * apply settings by calling method `InitSettingsFromFile`
 
-   <div class="sample-code-prefix template2"></div>
-      >- C++
-      >- Android
-      >- Objective-C
-      >- Swift
-      >
-   >
-   ```c++
-   char szErrorMsg[256] = {0};
-   CCaptureVisionRouter* cvr = new CCaptureVisionRouter;
-   cvr->InitSettingsFromFile("PATH-TO-YOUR-SETTING-FILE", szErrorMsg, 256);
-   // more process here
-   ```
-   >
-   ```java
-   try {
-      // `cvr` is an instance of `CaptureVisionRouter`.
-      cvr.initSettingsFromFile("PATH-TO-YOUR-SETTING-FILE");
-   } catch (CaptureVisionRouterException e) {
-      e.printStackTrace();
-   }
-   ```
-   >
-   ```objc
-   NSError *error;
-   // `cvr` is an instance of `DSCaptureVisionRouter`.
-   [self.cvr initSettingsFromFile:@"PATH-TO-YOUR-SETTING-FILE" error:&error];
-   ```
+<div class="sample-code-prefix template2"></div>
+   >- C++
+   >- Android
+   >- Objective-C
+   >- Swift
    >
-   ```swift
-   do{
-      //`cvr` is an instance of `CaptureVisionRouter`.
-      try cvr.initSettingsFromFile("PATH-TO-YOUR-SETTING-FILE")
-   }catch{
-      // Add code to do when error occurs.
-   }
-   ```
+>
+```c++
+char szErrorMsg[256] = {0};
+CCaptureVisionRouter* cvr = new CCaptureVisionRouter;
+cvr->InitSettingsFromFile("PATH-TO-YOUR-SETTING-FILE", szErrorMsg, 256);
+// more process here
+```
+>
+```java
+try {
+   // `cvr` is an instance of `CaptureVisionRouter`.
+   cvr.initSettingsFromFile("PATH-TO-YOUR-SETTING-FILE");
+} catch (CaptureVisionRouterException e) {
+   e.printStackTrace();
+}
+```
+>
+```objc
+NSError *error;
+// `cvr` is an instance of `DSCaptureVisionRouter`.
+[self.cvr initSettingsFromFile:@"PATH-TO-YOUR-SETTING-FILE" error:&error];
+```
+>
+```swift
+do{
+   //`cvr` is an instance of `CaptureVisionRouter`.
+   try cvr.initSettingsFromFile("PATH-TO-YOUR-SETTING-FILE")
+}catch{
+   // Add code to do when error occurs.
+}
+```