Refer this Dzone article for more details; http://netbeans.dzone.com/news/revamped-html-hyperlink-naviga In this article, check out the introductory part as it provides all the usecase's implemented currently working for NetBeans 6.0! Usecase's to be implemented are as follows; Type 6- based on Type 4 (Referenced HTML files within another directory) <a href="path\\to
ref.html">Text in-between these tags, get hyperlinked!</a> This ref.html is the Referenced HTML file, which is in the directory having a relative path (path/to/). Currently, module doesn't handle this scenario. So, it must handle this so as to prevent it from throwing exception to the user.