Display your help volume and try every hyperlink. Any underlined text (solid or dashed underlines) is a hyperlink. Also, test any graphics that are hyperlinks. Graphic hyperlinks use an open-cornered border (dashed or solid) around the image as a hyperlink cue.
If you are writing application-specific help and you have included any JumpNewView, Man, or AppDefined links, you must test these links from your application. Testing such links using dthelpview does not ensure that the links will operate correctly from within your application.