palette) to provide similar wallpaper features otherwise lacking in those systems. A wallpaper feature was added in a beta release of OS/2 2.0 in 1991. Due to the widespread use of personal computers, some wallpapers have become immensely recognizable and gained iconic cultural status. Bliss, the default wallpaper of Microsoft Windows XP has become the most viewed photograph of the 2000s. Animated backgrounds Animated backgrounds (sometimes referred to as live backgrounds or dynamic backgrounds) refers to wallpapers which feature a moving image or a 2D / 3D scene as an operating system background rather than a static image, it may also refer to wallpapers being cycled in a playlist, often with certain transition effects. Some operating systems, such as Android, provide native support for animated wallpapers. Microsoft Windows Since Windows 7, modern Windows systems can be configured to cycle through pictures from a folder at regular intervals. Windows does not natively support animated backgrounds, however, third-party software can be installed to have full support for placing animated images, video files, 2D or 3D scenes, and web pages as wallpapers. Similar functionality could be found in the Active Desktop feature of Internet Explorer versions 4 to 6, which is included in Windows 95 OSR 2.5 through Windows XP. Google Android Live wallpapers have been introduced in Android Eclair to provide native support for animated wallpapers. From a technical point of view, live wallpapers are software applications that provide a moving background image and may allow for user interaction or utilize other hardware and software features within the device (accelerometer, GPS, network access, etc.). Apple macOS macOS has built-in support, via the Desktop & Screen Saver panel in its System Preferences, for cycling through a folder collection of images on a timed interval or when logging in or waking from sleep. Since macOS Mojave, the user can also select a "Dynamic Desktop" that automatically updates to visually match the time of the day. Additionally, macOS has the native ability to run a screen saver on the desktop; in this configuration, the screen saver appears beneath the desktop icons in place of the system wallpaper. However, macOS does not feature a built-in interface to do this; it must be done through Terminal commands or various third-party applications. iOS Dynamically animated backgrounds have also been introduced in iOS 7 and later versions, however they are restricted to the ones provided by Apple. Jailbroken iOS