Layout panel is a container for other elements. It orders the contained elements as a stack vertically or horizontally. When the elements pass through the left end of the stacklayout, the last one is put on a new line. If horizontal is chosen the width of all elements is the width of the largest element in the column.
Content within a user interface is often larger than the visible area that the user can see. Large Telerik elements can be put in scroll viewer in order to scroll their content in small visible area.
Every element that support scrolling must implement this interface. Currently only class RadScrollViewer implements this interface and all Telerik elements that can be scrolled inherit that class.