940775: Updated UG documentation for unload

Document-Processing/PDF/PDF-Viewer/angular/how-to/unload-document.md

@@ -12,14 +12,26 @@ domainurl: ##DomainURL##
 
 The PDF Viewer library allows you to unload the PDF document being displayed in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/angular/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/angular/getting-started) to create a simple PDF Viewer sample.
 
 **Step 2:** Add the following code snippet to perform the unload operation.
 
 ```html
- <button (click)="unload()">Unload Document</button>
+<button (click)="unload()">Unload Document</button>
 ```
 
 ```typescript

Document-Processing/PDF/PDF-Viewer/asp-net-core/how-to/unload-document.md

@@ -12,6 +12,18 @@ documentation: ug
 
 The PDF Viewer library allows you to unload the PDF document being displayed in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/asp-net-core/getting-started) to create a simple PDF Viewer sample.

Document-Processing/PDF/PDF-Viewer/asp-net-mvc/how-to/unload-document.md

@@ -13,6 +13,18 @@ documentation: ug
 
 The PDF Viewer library allows you to unload the PDF document being displayed in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/asp-net-mvc/getting-started/) to create a simple PDF Viewer sample.

Document-Processing/PDF/PDF-Viewer/javascript-es5/how-to/unload-documents.md

@@ -13,6 +13,18 @@ domainurl: ##DomainURL##
 
 The PDF Viewer library allows you to unload the PDF document being display in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/javascript/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/javascript-es5/getting-started/) to create a simple PDF Viewer sample.

Document-Processing/PDF/PDF-Viewer/javascript-es6/how-to/unload-document.md

@@ -13,6 +13,18 @@ domainurl: ##DomainURL##
 
 The PDF Viewer library allows you to unload the PDF document being display in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/javascript-es6/getting-started/) to create a simple PDF Viewer sample.

Document-Processing/PDF/PDF-Viewer/react/how-to/unload-document.md

@@ -12,6 +12,18 @@ domainurl: ##DomainURL##
 
 The PDF Viewer library allows you to unload the PDF document being displayed in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/react/documentation/api/pdfviewer/#unload) method.
 
+ The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/react/getting-started/) to create a simple PDF Viewer sample.

Document-Processing/PDF/PDF-Viewer/vue/how-to/unload-document.md

@@ -12,6 +12,18 @@ domainurl: ##DomainURL##
 
 The PDF Viewer library allows you to unload the PDF document being displayed in the PDF Viewer control programmatically using the [**unload()**](https://ej2.syncfusion.com/vue/documentation/api/pdfviewer/#unload) method.
 
+The `unload()` method is essential for managing memory and data integrity in the PDF Viewer. When a PDF is loaded, its data is cached on the server, while rendered pages and annotation data are stored in the browser's session storage.
+
+The `unload()` method is called internally to clear this cached data in the following scenarios:
+*   When a new document is loaded.
+*   When the browser window/tab is closed or refreshed.
+
+This automatic cleanup ensures that no residual data remains, which helps reduce server-side memory consumption.
+
+Additionally, the `unload()` method is automatically invoked when using the `viewer.load()` method to load a new document. This ensures the currently displayed PDF is properly unloaded and all related cache is cleared on both the client and server sides.
+
+You can also call the `unload()` method programmatically. This is useful when you need to explicitly clear the viewer and release all associated client and server-side resources before the user navigates away or closes the session manually.
+
 The following steps are used to unload the PDF document programmatically.
 
 **Step 1:** Follow the steps provided in the [link](https://help.syncfusion.com/document-processing/pdf/pdf-viewer/vue/getting-started/) to create a simple PDF Viewer sample.