(apologies if this is not the right place to ask--suggestions on a more 
appropriate venue welcome!)

I would like to do some literate programming-type writing, probably 
using the DocBook format.  The paper by Norman Walsh entitled "Literate 
Programming in XML" seems to be a good way to do that, using a couple 
small namespace extensions (src:fragment and src:fragref).  I could 
write it in raw XML if need be, but I'd rather use s.t. like XMLMind.

However, while the freeware version of XMLMind does a fine job with text 
(and probably lots of other things), it doesn't seem to know about 
literate programming, and in particular it doesn't know about Walsh's 
extensions for literate programming.

(But when I search for "src:fragment" etc. in the files in XMLMind's 
config and docs directories, I get approximately a quarter bazillion 
hits.  So XMLMind uses literate programming somehow, although I'm not 
sure I understand what these directories are for.)

So, my questions:

Is it possible to tell XMLMind (either the freeware version or the pay 
version) about Walsh's literate programming extensions?  The 'Help' says 
that the dlg box to add a namespace is "not displayable for 
non-namespace aware documents", and that "XXE [= XMLMind XML Editor] is 
not namespace aware for a document using a DTD as its grammar."

I tried inserting the xmlns: attribute into the <article> tag, as per 
Walsh's article.  But this gives an error 'element has no attribute 
"xmlns:src"'.  I presume this is because XMLMind (and DTDS in general?) 
is not namespace aware.  If so, just how are you supposed to add an 
extension like Walsh's?

If I had a schema for DocBook, rather than a DTD, would it be "namespace 
aware"?

Other ideas welcome... what I think would help most is a _small_ but 
_complete_ sample showing 'fragment' and 'fragref' embedded into a 
DocBook doc.  That's what I thought the sample code in Walsh's paper 
was, but it doesn't seem to be stand-alone (and of course the URLs and 
such like are old).

	Mike Maxwell