Implications of navtitle on a mapref

This question came up in the discussion of the new learningGroupMapRef and
learnhingObjectMapRef elements:

When a mapref has a navigation title, what is the processing implication? I
see two options:

1. Like titles of submaps, it's ignored for the purpose of defining the
navigation title hierarchy.

2. It applies to the first normal-role topicref descendant of the referenced
map.

I couldn't find anything in the language reference that answers this
question.

Do we know the answer to this question?

Cheers,

E.


-- 
Eliot Kimber
Senior Solutions Architect, RSI Content Solutions
"Bringing Strategy, Content, and Technology Together"
Main: 512.554.9368
www.rsicms.com
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Book: DITA For Practitioners, from XML Press,
http://xmlpress.net/publications/dita/practitioners-1/