While running an application or viewing a document, the user may require help on the application or document. For example, an application may be a descendant of WPFolder class, to which you added a new context menu. You then need to provide a help dialog for this new context menu. It is important to include the help information for all applications as it is used often. This chapter describes different methods that can be overridden in order to provide help from an application window when a user requests it either by: