update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-document.md

 # File Interaction
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**<br/>
-- The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
-- The APIs of this module will be deprecated and are not recommended for use. An exception will be thrown if any of the APIs is called.
+> **NOTE**<br/>
+> - The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+> - The APIs of this module will be deprecated and are not recommended for use. An exception will be thrown if any of the APIs is called.
 
 ## Modules to Import
 
@@ -12,109 +12,115 @@ import document from '@ohos.document';
 
 ## document.choose
 
-choose(type:string[]): Promise&lt;string&gt;
+choose(types? : string[]): Promise&lt;string&gt;
 
-Chooses a file of the specified type using the file manager. This method uses a promise to return the result.
+Chooses a file of the specified type using the file manager. This API uses a promise to return the result.
 
-**System capability**: SystemCapability.FileManagement.File.FileIO
+**System capability**: SystemCapability.FileManagement.UserFileService
 
-- Parameters
+**Parameters**
 
   | Name| Type  | Mandatory| Description                        |
   | ------ | ------ | ---- | ---------------------------- |
-  | type   | string[] | No  | Type of the file to choose.|
+  | types   | string[] | No  | Type of the file to choose.|
 
-- Return value
+**Return value**
 
   | Type                 | Description          |
   | --------------------- | -------------- |
   | Promise&lt;string&gt; | Promise used to return the result. An error code is returned.|
 
-- Example
+**Example**
 
   ```js
-  await document.choose(type);
+  let types = [];
+  document.choose(types);
   ```
 ## document.choose
 
 choose(callback:AsyncCallback&lt;string&gt;): void
 
-Chooses a file using the file manager. This method uses an asynchronous callback to return the result.
+Chooses a file using the file manager. This API uses an asynchronous callback to return the result.
 
-**System capability**: SystemCapability.FileManagement.File.FileIO
+**System capability**: SystemCapability.FileManagement.UserFileService
 
-- Parameters
+**Parameters**
 
   | Name  | Type                       | Mandatory| Description                        |
   | -------- | --------------------------- | ---- | ---------------------------- |
   | callback | AsyncCallback&lt;string&gt; | Yes  | Callback used to return the result. An error code is returned.|
 
-- Example
+**Example**
 
   ```js
-  await document.choose(function(err, uri) {
+  let uri = "";
+  document.choose(function(err, uri) {
         // Do something with the URI. 
   });
   ```
 ## document.choose
 
-choose(type:string[], callback:AsyncCallback&lt;string&gt;): void
+choose(types:string[], callback:AsyncCallback&lt;string&gt;): void
 
-Chooses a file of the specified type using the file manager. This method uses an asynchronous callback to return the result.
+Chooses a file using the file manager. This API uses an asynchronous callback to return the result.
 
-**System capability**: SystemCapability.FileManagement.File.FileIO
+**System capability**: SystemCapability.FileManagement.UserFileService
 
-- Parameters
+**Parameters**
 
   | Name  | Type                       | Mandatory| Description                        |
   | -------- | --------------------------- | ---- | ---------------------------- |
-  | type     | string[]                      | No  | Type of the file to choose.|
+  | types    | string[]                      | No  | Type of the file to choose.|
   | callback | AsyncCallback&lt;string&gt; | Yes  | Callback used to return the result. An error code is returned.|
 
-- Example
+**Example**
 
   ```js
-  await document.choose(type, function(err, uri) {
+  let types = [];
+  let uri = "";
+  document.choose(types, function(err, uri) {
         // Do something with the URI. 
   });
   ```
 
 ## document.show
 
-show(url:string, type:string):Promise&lt;number&gt;
+show(uri:string, type:string):Promise&lt;void&gt;
 
-Opens a file. This method uses a promise to return the result.
+Opens a file. This API uses a promise to return the result.
 
-**System capability**: SystemCapability.FileManagement.File.FileIO
+**System capability**: SystemCapability.FileManagement.UserFileService
 
-- Parameters
+**Parameters**
 
   | Name| Type  | Mandatory| Description                        |
   | ---- | ------ | ---- | ---------------------------- |
   | uri | string | Yes  | URI of the file to open.|
   | type | string | Yes  | Type of the file to open.|
 
-- Return value
+**Return value**
 
   | Type                 | Description        |
   | --------------------- | ------------ |
   | Promise&lt;void&gt; | Promise used to return the result. An error code is returned.|
 
-- Example
+**Example**
 
   ```js
-  await document.show(uri, type);
+  let type = "";
+  let uri = "";
+  document.show(uri, type);
   ```
 
 ## document.show
 
-show(url:string, type:string, callback:AsyncCallback&lt;void&gt;): void
+show(uri:string, type:string, callback:AsyncCallback&lt;void&gt;): void
 
-Opens a file. This method uses an asynchronous callback to return the result.
+Opens a file. This API uses an asynchronous callback to return the result.
 
-**System capability**: SystemCapability.FileManagement.File.FileIO
+**System capability**: SystemCapability.FileManagement.UserFileService
 
-- Parameters
+**Parameters**
 
   | Name  | Type                       | Mandatory| Description                        |
   | -------- | --------------------------- | ---- | ---------------------------- |
@@ -122,10 +128,12 @@ Opens a file. This method uses an asynchronous callback to return the result.
   | type | string | Yes  | Type of the file to open.|
   | callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result. An error code is returned.  |
 
-- Example
+**Example**
 
   ```js
-  await document.show(uri, type, function(err) {
+  let type = "";
+  let uri = "";
+  document.show(uri, type, function(err) {
         //do something
   });
   ```

en/application-dev/reference/apis/js-apis-securityLabel.md

+# Security Label
+
+> **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.
+
+Manages file data security levels, including obtaining and setting file data security levels.
+
+## Modules to Import
+
+```js
+import securityLabel from '@ohos.securityLabel';
+```
+
+## Usage
+
+Before using the APIs provided by this module to perform operations on a file or directory, obtain the path of the application sandbox. For details, see [getOrCreateLocalDir of the Context module](js-apis-Context.md).
+
+```js
+import featureAbility from '@ohos.ability.featureAbility';
+let context = featureAbility.getContext();
+let path = context.getFilesDir();
+```
+
+## securityLabel.setSecurityLabel
+
+setSecurityLabel(path:string, type:dataLevel):Promise&lt;void&gt;
+
+Sets the security label for a file in asynchronous mode. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+| Name   | Type      | Mandatory| Description                                        |
+| --------- | ------    | ---- | -------------------------------------------- |
+| path      | string    | Yes  | File path.                                    |
+| type      | dataLevel | Yes  | File security level, which can be **s0**, **s1**, **s2**, **s3**, or **s4**.|
+
+**Return value**
+
+  | Type               | Description            |
+  | ------------------- | ---------------- |
+  | Promise&lt;void&gt; | Promise used to return the result. An empty value will be returned.|
+
+**Example**
+
+  ```js
+  let type = "s4";
+  securityLabel.setSecurityLabel(path, type).then(function(){
+      console.info("setSecurityLabel successfully");
+  }).catch(function(error){
+      console.info("setSecurityLabel failed with error:" + error);
+  });
+  ```
+
+## securityLabel.setSecurityLabel
+
+setSecurityLabel(path:string, type:dataLevel, callback: AsyncCallback&lt;void&gt;):void
+
+Sets the security label for a file in asynchronous mode. This API uses a callback to return the result.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+| Name   | Type                     | Mandatory| Description                                        |
+| --------- | ------------------------- | ---- | -------------------------------------------- |
+| path      | string                    | Yes  | File path.                                    |
+| type      | dataLevel                 | Yes  | File security level, which can be **s0**, **s1**, **s2**, **s3**, or **s4**.|
+| callback  | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.                  |
+
+**Example**
+
+  ```js
+  let type = "s4";
+  securityLabel.setSecurityLabel(path, type, function(error){
+      console.info("setSecurityLabel:" + JSON.stringify(error));
+  });
+  ```
+## securityLabel.setSecurityLabelSync
+
+setSecurityLabelSync(path:string, type:dataLevel):void
+
+Sets the security label for a file in synchronous mode.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+| Name   | Type  | Mandatory| Description                                        |
+| --------- | ------ | ---- | -------------------------------------------- |
+| path      | string | Yes  | File path.                                    |
+| type      | dataLevel | Yes  | File security level, which can be **s0**, **s1**, **s2**, **s3**, or **s4**.|
+
+**Example**
+
+```js
+let type = "s4";
+securityLabel.setSecurityLabelSync(path, type);
+```
+
+## securityLabel.getSecurityLabel
+
+getSecurityLabel(path:string):Promise&lt;string&gt;
+
+Obtains the security label of a file in asynchronous mode. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+  | Name| Type  | Mandatory| Description    |
+  | ------ | ------ | ---- | -------- |
+  | path   | string | Yes  | File path.|
+
+**Return value**
+
+  | Type                 | Description        |
+  | --------------------- | ------------ |
+  | Promise&lt;string&gt; | Promise used to return the security label obtained.|
+
+**Example**
+
+  ```js
+  let type = "s4";
+  securityLabel.getSecurityLabel(path).then(function(type){
+      console.log("getSecurityLabel successfully:" + type);
+  }).catch(function(error){
+      console.log("getSecurityLabel failed with error:" + error);
+  });
+  ```
+
+## securityLabel.getSecurityLabel
+
+getSecurityLabel(path:string, callback:AsyncCallback&lt;string&gt;): void
+
+Obtains the security label of a file in asynchronous mode. This API uses a callback to return the result.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+  | Name  | Type                       | Mandatory| Description                      |
+  | -------- | --------------------------- | ---- | -------------------------- |
+  | path     | string                      | Yes  | File path.                  |
+  | callback | AsyncCallback&lt;string&gt; | Yes  | Callback used to return the security label obtained.|
+
+**Example**
+
+  ```js
+  let type = "s4";
+  securityLabel.getSecurityLabel(path,function(error, type){
+      console.log("getSecurityLabel successfully:" + type);
+  });
+  ```
+## securityLabel.getSecurityLabelSync
+
+getSecurityLabelSync(path:string):string
+
+Obtains the security label of a file in synchronous mode.
+
+**System capability**: SystemCapability.FileManagement.File.FileIO
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description    |
+| ------ | ------ | ---- | -------- |
+| path   | string | Yes  | File path.|
+
+**Return value**
+
+| Type  | Description        |
+| ------ | ------------ |
+| string | Security label obtained.|
+
+**Example**
+
+```js
+let result = securityLabel.getSecurityLabelSync(path);
+console.log("getSecurityLabel successfully:" + result);
+```