On Aug 26, 2010, at 10:14 AM, Carl Wilhelm Soderstrom wrote:

> 
> I write doco using Vim and Docbook (when it's not wiki'ed, which is the
> usual route these days); tho if I knew more about XML or other formatting
> tools I might go a different route.

I highly recommend oXygenXML ( http://oxygenxml.com ) for editing DocBook and all XML and XQuery.  It runs on GNU/Linux, Mac OS X and MS Windows.