Do we need multi-level specialization?

In our last call we were struggling with
how to represent multiple levels of inheritance in Lightweight DITA, especially
in non-XML forms like HTML5 and Markdown.

But backing up a bit, Don asked the
question: do we even really need multiple levels in Lightweight?

Do we have any examples where multi-level
specialization would be required? That is, any examples where a specialization
would need to be based off another existing specialization, rather than
off of elements in topic or map.

Michael Priestley, Senior Technical Staff Member (STSM)
Enterprise Content Technology Strategist

http://dita.xml.org/blog/michael-priestley