FileUploader: update Overview

concepts/05 UI Components/FileUploader/00 Overview/00 Overview.md

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+FileUploader is a UI component that allows users upload files to the server. Users can either select files in the file explorer or drag and drop them onto the FileUploader area on the page.
+
+In this overview, you can find a map of FileUploader elements, information about key features, and what to explore next.

concepts/05 UI Components/FileUploader/00 Overview/05 Elements.md

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+<img src="/images/FileUploader/file-uploader-elements.png" alt="FileUploader elements"/>
+
+1. [An element that opens the upload dialog](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#dialogTrigger)
+2. [Drop zone](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#dropZone)
+3. [Allowed file extensions](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#allowedFileExtensions)
+4. [Maximum file size](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#maxFileSize)
+
+*Points 3 and 4 are simply a visual representation of the linked properties.*

concepts/05 UI Components/FileUploader/00 Overview/10 Key Features.md

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+- **Uploading Options**  
+[Upload](/Documentation/Guide/UI_Components/FileUploader/Upload_Files/Client-Side_Settings/) files instantly or confirm upload with built-in buttons. Upload files [in chunks](/Documentation/Guide/UI_Components/FileUploader/Upload_Files/Client-Side_Settings/#Chunk_Upload) (requires [server-side setup](https://demos.devexpress.com/ASPNetMvc/Demo/FileUploader/ChunkUploading)) or when an [HTML form is submitted](/Documentation/Guide/UI_Components/FileUploader/Upload_Files/Client-Side_Settings/#Upload_Mode).
+
+- **File Restrictions**  
+[Restrict](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#accept) types of files and specify[allowed file extensions](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#allowedFileExtensions). Set [maximum](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#maxFileSize)/[minimum](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#minFileSize) file size. Allow users to select either one file or [multiple](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#multiple) files at a time.
+
+- **Validation**  
+All DevExtreme component [validation](/Documentation/Guide/UI_Components/FileUploader/File_Validation/) options are available for FileUploader. Configure [validation errors](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#validationErrors) and check if FileUploader [is dirty](/Documentation/ApiReference/UI_Components/dxFileUploader/Configuration/#isDirty). Files are validated on the client, but [server-side validation](https://demos.devexpress.com/ASPNetMvc/Demo/FileUploader/Validation/) is also necessary.

concepts/05 UI Components/FileUploader/00 Overview/15 Explore More.md

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+- [API](/api-reference/10%20UI%20Components/dxFileUploader '/Documentation/ApiReference/UI_Components/dxFileUploader/')
+
+- [Demos](https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/FileSelection/)

concepts/05 UI Components/FileUploader/20 Upload Files/05 Client-Side Settings/05 Upload Mode.md

@@ -93,7 +93,6 @@ The following examples show how to configure the FileUploader for each upload mo
             components: {
                 DxFileUploader
             },
-
             data() {
                 return {
                     //...
@@ -237,7 +236,6 @@ The following examples show how to configure the FileUploader for each upload mo
             components: {
                 DxFileUploader
             },
-
             data() {
                 return {
                     //...