The widget's default security settings provide read-only access to files and directories. Use the permissions option to deny or allow a user to copy, create, move, remove, rename, upload, and download files and directories. You can also specify upload file restrictions: allowed file extensions (allowedFileExtensions) and maximum file size (maxFileSize).
Use the widget's itemView option or the view switcher on the toolbar to display file system items as a detailed list or customizable thumbnails.
This demo contains commented out code lines that enable file modification operations. You can uncomment them and configure if necessary.