question on docbook help system

[Erwan de FERRIERES]

Hi Hans and all,

While looking at the help system you put in place, there is a question I 
have :
in the
applications/accounting/data/helpdata/HELP_ACCOUNTING_invoices.xml file, 
you put <xi:include href="..."/> after the last paragraph.

I've seen it is to make links between documents but I can't see the 
links displayed in the help window.
So, have I misunderstood the goal of those elements or is that the 
displaying of the links is not yet implemented ?

thanks in advance,

--
Erwan