Most standard hyperlink events are handled internally by the Help System. However, there are four types of hyperlinks that your application is responsible for handling:
Jump-new-view hyperlinks--Your application must create a new help dialog to honor the author's request for a topic to be displayed in a new help window.
Man page links--Your application must create a new quick help dialog (or get one from your cache) to display a man page. Typically, the size of man page windows is different from all other help windows.
Application-defined links--Your application must interpret the data associated with these links. Application-defined links exist only if you and the author have collaborated to create them.
Text file links--Your application must create a quick help dialog (or get one from you cache) to display the text file.