Suggested Actions Menu
The WPF XAML Designer includes a Suggested Actions menu that is similar to the Smart Tags. The controls from the Telerik.Windows.Controls assembly support these actions for .NET projects.
The Suggested Actions menu give you access to common properties of a control selected within the new WPF XAML Designer. To display the menu, click on a Telerik control in the designer and use the lightbulb icon to expand and interact with the Suggested Actions UI.
Suggested actions menu displayed on RadCallout control