JHelpPlus is a plugin to extend the normal functionality of the jEdit help viewer--it is based on that code (by Slava).
The plugin hasn't been submitted to the jEdit community site yet. Feel free to download from here, try it out, and send me feedback.
JHelpPlus was built with JDK 1.4.2_03, against jEdit 4.2pre14.
JHelpPlus.jar file into the
/jars directory of jEdit main configuration. Restart jEdit.