When the JavaHelp system is activated by your application, the first thing 
  it does is read the application's helpset file. The next thing it does is read the map file 
  listed in the helpset file. The map file is used to associate topic IDs with 
  URLs (paths to HTML topic files) and to define the window that can display help 
  topics. By convention, map file names use the .jhm suffix. 
The format of the map file is based on the World Wide Web Consortium Extended Markup Language (XML).
The following code listing is an example of a short map file:
<?xml version='1.0' encoding='ISO-8859-1' ?>
<!DOCTYPE map
PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp Map Version 2.0//EN"
"http://java.sun.com/products/javahelp/map_2_0.dtd">
<map version="2.0"> <mapID target="toplevelfolder" url="images/toplevel.gif" > <mapID target="hol_intro" url="hol/hol.html" /> <mapID target="halloween" url="hol/hall.html"/> <mapID target="jackolantern" url="hol/jacko.html" /> <mapID target="jacko_carving" url="hol/jacko.html#carving" /> <mapID target="mluther" url="hol/luther.html" /> <mapID target="reformation" url="hol/inforefo.html" /> <mapID target="fawkes" url="hol/guy.html" /> <mapID target="thanksgiving" url="hol/thanks.html" /> <mapID target="thanksgiving_turkey" url="hol/thanks.html#turkey" /> <mapID target="1thanksproc" url="hol/thanks2.html" /> <mapID target="gwthanksproc" url="hol/thanks3.html" /> <mapID target="althanksproc" url="hol/thanks4.html" /> <mapID target="valentine" url="hol/val.html" /> <mapID target="onlove" url="hol/love.html" /> </mapID> </map>
Note that images referred to as IDs (for example, in the TOC) can also be associated 
  with an ID. In this example, toplevelfolder is associated with the 
  GIF image toplevel.gif. 
The following table describes the tags that can be used in the map file:
| <map> | Defines the map. It contains <mapID>tags and the following 
      optional attributes.
 | ||||||
| <mapID> | Defines a map entry.  Uses the
following attributes: 
 | 
 See also:
See also: