The "Hyperlinks" section of HelpNDoc's topic analyzer lists all hyperlinks found throughout the currently inspected topic. The hyperlink analyzer can be used to:

Filtering broken links

Broken links point to a specific topic which has been deleted since the link creation. HelpNDoc's topic analyzer makes it easy to spot broken links by clicking "Filter" then "Show broken items only". This will filter the view to display only broken links. By double-clicking a link in the view, or selecting it then clicking "Locate and select", the link will be selected in HelpNDoc's topic editor so that it can easily be corrected.