To jump to a topic in another help volume:
<link hyperlink="volume id" JumpNewView>text<\link>
If the other volume is registered, the volume parameter is just the base name of the volume file. If the volume is not registered, you must include a complete path name to the volume.
The JumpNewView parameter is recommended for links to other volumes so that users realize they have jumped into another volume. The previous view remains displayed so they can see where they came from.