These are two types of text formatting tags -- logical formatting tags ( <strong> and <em> ), which describe the information in the element, and physical formatting tags (<b> and <i>), which specify its appearance. By default CuteEditor use the logical formatting tags ( <strong> and <em> ). If you want to use the physical tags (<b> and <i>), you can set this property to true.
Editor Class | CuteEditor Namespace