> I've constructed a first cut, available at
> 
>   http://www.sonic.net/~tallen/xdb01.zip
> 
> This is not yet Duckbook, and the Public Identifiers and copyright
> notice are for convenience rather than an assertion of where this
> effort is going.  The zip file contains a catalogue, a test file
> "blue", and four DTD/entity files:  xdb.dtd, xdbhier.mod, xdbpool.mod,
> and xdbgen.mod.  I tested a variant of this set (the variants
> included minimization parameters) and "blue" parses as SGML.
This is an impressive piece of work - ca. 5000 lines.
I have run a first pass with a well-known XML parser - I shall honour 
confidentiality at this stage :-)  
For note; this references a variety of entitysets which I didn't have to
hand. 
> 
> I would be grateful if members of this group who are running XML
> parsers would take the time to see whether this DTD, XDB 0.1,
> is valid XML.  Please send me comments at tallen@sonic.net.
I will do so.  
	P.
-- Peter Murray-Rust, domestic net connection Virtual School of Molecular Sciences http://www.vsms.nottingham.ac.uk/