[NOTE: this was my first attempt to articulate the issues around xrefs to
topicheads. I am posting it for background and history. The subsequent
discussion has superseded much of this analysis but I think my summary of
the original issue and discussion in the TC conn calls might be useful--WEK]
This is my attempt to summarize the issue and, hopefully, allow us to come
to closure.
The original issue stemmed from the fact that DITA allows cross references
from topics to topicrefs within maps. However, through DITA 1.1 there is no
explicit language about what that means from a processing standpoint and
there are several possible cases which may have or should have or could have
different processing implications.
For cross references from topics to topicrefs I've identified the following
possible cases. In this discussion, by "topicref" I mean a topicref element
that points directly or indirectly to a topic. By "topichead" I mean a
topicref element that has only a navigation title. By "textref" I mean a
topicref element that contains only a