updates of new user-contributions to a specific area. Dynamic labels In August 2010, Bing Maps added dynamic labels to its Silverlight experience (bing.com/maps/explore). Turn on the dynamic labels beta from the map style selector on bing.com/maps/explore and the labels become clickable. This allows users to quickly zoom down to a region or location anywhere on the map with just a few clicks. Zooming back out in a single click is also possible by using the ‘breadcrumb’ trail at the top left of the map. AJAX and Silverlight versions Bing Maps has two separate versions for users: an AJAX version (located at Bing.com/Maps) and an opt-in Silverlight version (located at Bing.com/Maps/Explore—not available anymore) that requires Microsoft Silverlight to be installed. The Silverlight version is positioned to offer richer, more dynamic features and a smoother experience. In November 2010, the AJAX and Silverlight versions were combined into a semi-hybrid site where Silverlight features such as Map Apps and Streetside could be enabled through the Bing.com/Maps site - these features still required Silverlight to be installed, but does not require use of a separate Bing Maps site. The AJAX and Silverlight site share the following features: Road View, Aerial View, Bird's-Eye View, Sharing Maps, People/Business/Location Search, Building Footprints, Driving Directions, Walking Directions. Silverlight users exclusively can use Map Apps, StreetSide View, Photosynths, and Dynamic Labels. Map apps Access Bing Map Apps are accessed either through the "Map Apps" button in the Bing Maps Explore Bar or through direct perma-links. The Map Apps button is only viewable if the user is in the Bing Maps Silverlight experience or in Windows 8. Third-party apps Bing Map Apps also allows third parties to create and submit map apps. The following are a list of 3rd party map apps: Map coverage Global Ortho Program In July 2010, Microsoft and DigitalGlobe, a provider of high-resolution earth imagery, announced the collection of the first imagery from the company's Advanced Ortho Aerial Program. Through a special agreement with Microsoft, the Advanced Ortho Aerial Program will provide wall-to-wall 30 cm aerial coverage of the contiguous United States and Western Europe that DigitalGlobe has the exclusive rights to distribute beyond Bing Maps. The program's first orthophoto mosaics are of Augusta, GA, San Diego, CA and Tampa, FL, and can be viewed on DigitalGlobe's website. Americas Africa Europe Asia / Oceania Middle East Compatibility Microsoft states that Bing Maps needs the following environment: