Adding Link Tags
A link tag is a unique identifier for a topic, and makes it possible to create a jump or popup link to a topic. If a paragraph style has the Auto Link check box selected, then Doc-To-Help will automatically create a link tag for every topic using that style
Sometimes you may need to manually create a unique link tag for a topic, particularly if you have two or more topics with the same name, and therefore the same link tag. The Link Tag dialog makes this possible. A topic can have more than one link tag, and can be viewed in the Topics window (right-click and select Columns>Link Tag from the context menu).