This is a second post in series of posts about new features in Silverlight 5. This post focuses at simple, yet much desired feature of multiple windows support. First – some clarification: multiple windows will work in elevated out-of-browser mode only. To demonstrate this feature I’ve built simplest application which spans 5 additional windows on button click. The “child” window presents a UserControl. Child window content: < UserControl x : Class ="MultipleWindows_OOB.ChildWindowContent"...