!3854 #I5563I完成，请审批

Merge pull request !3854 from Annie_wang/PR3551

!3854 #I5563I完成，请审批
Merge pull request !3854 from Annie_wang/PR3551
063b7c8a · openharmony_ci · Gitee · c7cdd8a2 · a7073216 · 063b7c8a
3 changed file
--- a/en/application-dev/reference/apis/js-apis-fileio.md
+++ b/en/application-dev/reference/apis/js-apis-fileio.md
@@ -625,7 +625,7 @@ Asynchronously reads data from a file. This method uses a promise to return the
  | ------- | ----------- | ---- | ---------------------------------------- |
  | fd      | number      | Yes   | File descriptor of the file to read.                            |
  | buffer  | ArrayBuffer | Yes   | Buffer used to store the file data read.                       |
-  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type                                | Description    |
@@ -662,7 +662,7 @@ Asynchronously reads data from a file. This method uses a callback to return the
  | -------- | ---------------------------------------- | ---- | ---------------------------------------- |
  | fd       | number                                   | Yes   | File descriptor of the file to read.                            |
  | buffer   | ArrayBuffer                              | Yes   | Buffer used to store the file data read.                       |
-  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |
  | callback | AsyncCallback&lt;[ReadOut](#readout)&gt; | Yes   | Callback invoked when the data is read asynchronously.                            |

 - Example
@@ -695,7 +695,7 @@ Synchronously reads data from a file.
  | ------- | ----------- | ---- | ---------------------------------------- |
  | fd      | number      | Yes   | File descriptor of the file to read.                            |
  | buffer  | ArrayBuffer | Yes   | Buffer used to store the file data read.                       |
-  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type    | Description      |
@@ -867,7 +867,7 @@ Asynchronously writes data into a file. This method uses a promise to return the
  | ------- | ------------------------------- | ---- | ---------------------------------------- |
  | fd      | number                          | Yes   | File descriptor of the file to write.                            |
  | buffer  | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
+  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|

 - Return value
  | Type                   | Description      |
@@ -903,7 +903,7 @@ Asynchronously writes data into a file. This method uses a callback to return th
  | -------- | ------------------------------- | ---- | ---------------------------------------- |
  | fd       | number                          | Yes   | File descriptor of the file to write.                            |
  | buffer   | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options  | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
+  | options  | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|
  | callback | AsyncCallback&lt;number&gt;     | Yes   | Callback invoked when the data is written asynchronously.                      |

 - Example
@@ -935,7 +935,7 @@ Synchronously writes data into a file.
  | ------- | ------------------------------- | ---- | ---------------------------------------- |
  | fd      | number                          | Yes   | File descriptor of the file to write.                            |
  | buffer  | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
+  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|

 - Return value
  | Type    | Description      |
@@ -1472,10 +1472,10 @@ Asynchronously reads data from a file. This method uses a promise to return the
 **System capability**: SystemCapability.FileManagement.File.FileIO

 - Parameters
-  | Name    | Type         | Mandatory  | Description                                      |
-  | ------- | ----------- | ---- | ---------------------------------------- |
-  | buffer  | ArrayBuffer | Yes   | Buffer used to store the file data read.                       |
-  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.|
+  | Name | Type       | Mandatory| Description                                                        |
+  | ------- | ----------- | ---- | ------------------------------------------------------------ |
+  | buffer  | ArrayBuffer | Yes  | Buffer used to store the file data read.                          |
+  | options | Object      | No  | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|

 - Return value
  | Type                                | Description    |
@@ -1509,7 +1509,7 @@ Asynchronously reads data from a file. This method uses a callback to return the
  | Name     | Type                                      | Mandatory  | Description                                      |
  | -------- | ---------------------------------------- | ---- | ---------------------------------------- |
  | buffer   | ArrayBuffer                              | Yes   | Buffer used to store the file data read.                       |
-  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.|
+  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|
  | callback | AsyncCallback&lt;[ReadOut](#readout)&gt; | Yes   | Callback invoked when the data is read asynchronously from the file.                         |

 - Example
@@ -2577,6 +2577,7 @@ Asynchronously stops **watcher**. This method uses a callback to return the resu
  ```


+
 ## Stream<sup>7+</sup>

 File stream. Before calling a method of the **Stream** class, use the **createStream()** method synchronously or asynchronously to create a **Stream** instance.
@@ -2721,7 +2722,7 @@ Asynchronously writes data into the stream. This method uses a promise to return
  | Name    | Type                             | Mandatory  | Description                                      |
  | ------- | ------------------------------- | ---- | ---------------------------------------- |
  | buffer  | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
+  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type                   | Description      |
@@ -2753,11 +2754,11 @@ Asynchronously writes data into the stream. This method uses a callback to retur
 **System capability**: SystemCapability.FileManagement.File.FileIO

 - Parameters
-  | Name     | Type                             | Mandatory  | Description                                      |
-  | -------- | ------------------------------- | ---- | ---------------------------------------- |
-  | buffer   | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options  | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
-  | callback | AsyncCallback&lt;number&gt;     | Yes   | Callback invoked when the data is written asynchronously.                         |
+  | Name  | Type                           | Mandatory| Description                                                        |
+  | -------- | ------------------------------- | ---- | ------------------------------------------------------------ |
+  | buffer   | ArrayBuffer&nbsp;\|&nbsp;string | Yes  | Data to write. It can be a string or data from a buffer.                    |
+  | options  | Object                          | No  | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size.|
+  | callback | AsyncCallback&lt;number&gt;     | Yes  | Callback invoked when the data is written asynchronously.                              |

 - Example
  ```js
@@ -2788,7 +2789,7 @@ Synchronously writes data into the stream.
  | Name    | Type                             | Mandatory  | Description                                      |
  | ------- | ------------------------------- | ---- | ---------------------------------------- |
  | buffer  | ArrayBuffer&nbsp;\|&nbsp;string | Yes   | Data to write. It can be a string or data from a buffer.                    |
-  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.|
+  | options | Object                          | No   | The options are as follows:<br>-&nbsp;**offset** (number): position of the data to write in reference to the start address of the data. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to write. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): start position to write the data in the file. By default, data is written from the current position.<br>-&nbsp;**encoding** (string): format of the string to be encoded. The default value is **utf-8**, which is the only value supported.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type    | Description      |
@@ -2818,7 +2819,7 @@ Asynchronously reads data from the stream. This method uses a promise to return
  | Name    | Type         | Mandatory  | Description                                      |
  | ------- | ----------- | ---- | ---------------------------------------- |
  | buffer  | ArrayBuffer | Yes   | Buffer used to store the file read.                             |
-  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type                                | Description    |
@@ -2853,7 +2854,7 @@ Asynchronously reads data from the stream. This method uses a callback to return
  | Name     | Type                                      | Mandatory  | Description                                      |
  | -------- | ---------------------------------------- | ---- | ---------------------------------------- |
  | buffer   | ArrayBuffer                              | Yes   | Buffer used to store the file read.                             |
-  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options  | Object                                   | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |
  | callback | AsyncCallback&lt;[ReadOut](#readout)&gt; | Yes   | Callback invoked when data is read asynchronously from the stream.                        |

 - Example
@@ -2884,7 +2885,7 @@ Synchronously reads data from the stream.
  | Name    | Type         | Mandatory  | Description                                      |
  | ------- | ----------- | ---- | ---------------------------------------- |
  | buffer  | ArrayBuffer | Yes   | Buffer used to store the file read.                             |
-  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.|
+  | options | Object      | No   | The options are as follows:<br>-&nbsp;**offset** (number): position to store the data read in the buffer in reference to the start address of the buffer. The default value is **0**.<br>-&nbsp;**length** (number): length of the data to read. The default value is the buffer length minus the offset.<br>-&nbsp;**position** (number): position of the data to read in the file. By default, data is read from the current position.<br>- &nbsp;The sum of **offset** and **length** must be less than or equal to the buffer size. |

 - Return value
  | Type    | Description      |

--- a/en/application-dev/reference/apis/js-apis-storage-statistics.md
+++ b/en/application-dev/reference/apis/js-apis-storage-statistics.md
@@ -3,7 +3,7 @@
 > ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**<br/>
 >
 > - The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
-> - The APIs of this module are system APIs and cannot be called by third-party applications.
+> - API version 9 is a canary release for trial use. The APIs of this version may be unstable.

 ## Modules to Import

@@ -15,7 +15,7 @@ import storagestatistics from "@ohos.storageStatistics";

 getTotalSizeOfVolume(volumeUuid: string): Promise&lt;number&gt;

-Asynchronously obtains the total space of the specified volume. This method uses a promise to return the result.
+Asynchronously obtains the total space of the specified volume. This API uses a promise to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -46,7 +46,7 @@ Asynchronously obtains the total space of the specified volume. This method uses

 getTotalSizeOfVolume(volumeUuid: string, callback:AsyncCallback&lt;number&gt;):void

-Asynchronously obtains the total space of the specified volume. This method uses a callback to return the result.
+Asynchronously obtains the total space of the specified volume. This API uses a callback to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -62,7 +62,7 @@ Asynchronously obtains the total space of the specified volume. This method uses
  ```js
  let uuid = "";
  storagestatistics.getTotalSizeOfVolume(uuid, function(error, number){
-      // Do something
+      // Do something.
      console.info("getTotalSizeOfVolume successfully:"+ number);
  });
  ```
@@ -73,7 +73,7 @@ Asynchronously obtains the total space of the specified volume. This method uses

 getFreeSizeOfVolume(volumeUuid: string): Promise&lt;number&gt;

-Asynchronously obtains the available space of the specified volume. This method uses a promise to return the result.
+Asynchronously obtains the available space of the specified volume. This API uses a promise to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -105,7 +105,7 @@ Asynchronously obtains the available space of the specified volume. This method

 getFreeSizeOfVolume(volumeUuid: string, callback:AsyncCallback&lt;number&gt;):void

-Asynchronously obtains the available space of the specified volume. This method uses a callback to return the result.
+Asynchronously obtains the available space of the specified volume. This API uses a callback to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -121,7 +121,7 @@ Asynchronously obtains the available space of the specified volume. This method
  ```js
  let uuid = "";
  storagestatistics.getFreeSizeOfVolume(uuid, function(error, number){
-      // Do something
+      // Do something.
      console.info("getFreeSizeOfVolume successfully:"+ number);
  });
  ```
@@ -130,7 +130,7 @@ Asynchronously obtains the available space of the specified volume. This method

 getBundleStats(packageName: string): Promise&lt;BundleStats&gt;

-Obtains the bundle status. This method uses a promise to return the result.
+Asynchronously obtains app information. This API uses a promise to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -144,7 +144,7 @@ Obtains the bundle status. This method uses a promise to return the result.

  | Type                                      | Description                      |
  | ------------------------------------------ | -------------------------- |
-  | Promise&lt;[Bundlestats](#bundlestats)&gt; | Promise used to return the bundle status on the volume.|
+  | Promise&lt;[Bundlestats](#bundlestats)&gt; | Promise used to return the app information.|

 - Example

@@ -161,7 +161,7 @@ Obtains the bundle status. This method uses a promise to return the result.

 getBundleStats(packageName: string,  callback: AsyncCallback&lt;BundleStats&gt;): void

-Obtains the bundle status. This method uses an asynchronous callback to return the result.
+Asynchronously obtains app information. This API uses a callback to return the result.

 **System capability**: SystemCapability.FileManagement.StorageService.SpatialStatistics

@@ -170,14 +170,14 @@ Obtains the bundle status. This method uses an asynchronous callback to return t
  | Name  | Type                                                     | Mandatory| Description                                |
  | -------- | --------------------------------------------------------- | ---- | ------------------------------------ |
  | packageName | string | Yes  | Bundle name of the app.|
-  | callback | callback:AsyncCallback&lt;[Bundlestats](#bundlestats)&gt; | Yes  | Callback invoked to return the bundle status on the volume.|
+  | callback | callback:AsyncCallback&lt;[Bundlestats](#bundlestats)&gt; | Yes  | Callback invoked to return the app information.|
  
 - Example

  ```js
  let packageName = "";
  storagestatistics.getBundleStats(packageName, function(error, BundleStats){
-      // Do something
+      // Do something.
      console.info("getBundleStats successfully:"+ JSON.stringify(BundleStats));
  });
  ```
@@ -191,5 +191,5 @@ Obtains the bundle status. This method uses an asynchronous callback to return t
 | Name     | Type  | Description          |
 | --------- | ------ | -------------- |
 | appSize<sup>9+</sup>   | number | Size of the app.   |
-| cacheSize<sup>9+</sup> | number | Size of the cached data.  |
+| cacheSize<sup>9+</sup> | number | Cache size of the app.  |
 | dataSize<sup>9+</sup>  | number | Total data size of the app.|
--- a/en/application-dev/reference/apis/js-apis-volumemanager.md
+++ b/en/application-dev/reference/apis/js-apis-volumemanager.md
@@ -2,8 +2,8 @@

 > ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**<br/>
 >
-> - The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
-> - The APIs of this module are system APIs and cannot be called by third-party applications.
+> - The initial APIs of this module are supported since API version 9.
+> - API version 9 is a canary release for trial use. The APIs of this version may be unstable.

 ## Modules to Import