HTML editor is one of the most-often used Web parts. It allow users to interactively edit the contents of the portal, and to immediately see the results in the WYSIWYG fashion. HTML editor exposes an additional action verb in its menu: Edit. When the user clicks on that verb, page is switched to the design mode, and each mouse click in the editable area initializes editor toolbar that is by default shown in the top portion of the screen.

public class MonoXHtmlEditor : BaseAutoRegisterPart, 
	IRssWebPart, IContentSharingWebPart

Public Class MonoXHtmlEditor
	Inherits BaseAutoRegisterPart
	Implements IRssWebPart, IContentSharingWebPart

public ref class MonoXHtmlEditor : public BaseAutoRegisterPart, 
	IRssWebPart, IContentSharingWebPart

type MonoXHtmlEditor =  
    class
        inherit BaseAutoRegisterPart
        interface IRssWebPart
        interface IContentSharingWebPart
    end