forced to regenerate by right-clicking the image in Thumbnail or Filmstrip views and selecting "Refresh thumbnail". AutoPlay AutoPlay examines newly discovered removable media and devices and, based on content such as pictures, music or video files, launches an appropriate application to play or display the content. AutoPlay (not to be confused with AutoRun) was created in order to simplify the use of peripheral devices – MP3 players, memory cards, USB storage devices and others – by automatically starting the software needed to access and view the content on these devices. AutoPlay can be enhanced by AutoPlay-compatible software and hardware. It can be configured by the user to associate favourite applications with AutoPlay events and actions. These actions are called AutoPlay Handlers and there are sets of Handlers associated with various types of content. New AutoPlay handlers can get added to the system when additional software is installed. The user can edit, delete or create AutoPlay handlers using TweakUI. AutoPlay settings can be configured per-device in Windows XP from the device's properties. When a user inserts an optical disc into a drive or attaches a USB camera, Windows detects the arrival and starts a process of examining the device or searching the medium. It is looking for properties of the device or content on the medium so that AutoPlay can present a set of meaningful options to the user. When the user makes a particular choice, they also have the option to make that selection automatic the next time Windows sees that content or device. The content types available vary with the type of drive selected. Other shell and UI improvements Windows XP introduced the notion of Perceived Types, making it easier for applications and shell extensions to register themselves with file types, even if the default program and its associated ProgID changes. Perceived Types also made it easier for end users to search files without specifying individual file extensions. Per-user Recycle Bin for NTFS volumes. In earlier versions of Windows NT, one user could see the other user's deleted files located in the Recycle Bin. Folder options to restore previously open folder windows at logon (restoring Explorer sessions) Customizable infotips on a per-file-class (file type) basis without writing shell extensions Windows Explorer is content-dependent, that is, it attempts to detect the dominant type of files in a folder and then selects the most appropriate view for the user automatically unless