Contents Item Types There are four types of items in the table of contents of a WinHelp system and two types of items in a HTML Help system. Contents Item Types (in WinHelp) Header Looks like a book including help topics and other books. Topic Link to a help topic. Macro Looks like a Topic but performs macros when choosing it. Include Defines the place for inserting items from an external contents file (.cnt). Contents Item Types (in HTML Help) Header Includes help topics and other headers. Unlike the WinHelp header, can refer to help topics. Topic Link to a help topic.