To identify broken links, use the Broken Links folder in the Project Manager. It displays the names of deleted or missing topics that are referenced in a project.
1)Select these options from the Tools menu to identify and fix broken links:
Show Topic Links
Displays a topic in Link View.
Show Topic References
Identifies references for one topic. Use this option to determine whether the topic is referenced in a TOC or index and whether other topics link to it.
For context-sensitive topics in Microsoft HTML Help systems. Use this option to diagnose problems that can occur when linking HTML Help systems to Windows applications.
Resolve Broken Links
Identifies missing or deleted topics that caused broken links. Use this option to determine where the broken links originate and to restore topic links.
Edit Topic References
Lets you look up references for topics in a project. Use this option to determine where references originate and to modify them.
Edit External Topic References
Identifies external topics (such as remote links or URLs) that are referenced in a project. Use this option to modify or remove them from the project.