span.sup { vertical-align:text-top; } Advanced WPF Understanding Routed Events and Commands In WPF Brian Noyes Code download available at:RoutedWPF2008_09a.exe(175 KB) Contents Routed Events Overview WPF Element Trees Event Routing Routed Events and Composition Attached Events Routed Commands Overview Routed Command in Action Command Routing Defining Commands Command Plumbing Routed Command Challe