On 23 May 2023 15:19:39 <rick@xxxxxxxxxxxxxx> wrote:

I have a DTD with a bunch of external references. I need to modify
the DTD and distribute it to a client. Can you recommend any tools
for flattening a DTD?

I think I documented one or more in my book on tools but I'm away
from base for 24hrs. I'll check tomorrow.

Mulberry uses Near and Far, but that is not available for purchase,

Oddly, although I mention loading a DTD from a flattened version in
Near&Far (p.173) I don't say anything about using Near&Far to do the
actual flattening. Debbie is well ahead of me here.

For reading existing DTDs, the solution is to bflattenb the DTD
with a program such as Richard Lightbs experimental NormDTD (see
this chapter) or James Clarkbs spam (see chapter 4), both of which
are included on the CD-ROM.

I have snipped out those pages at
http://xml.silmaril.ie/downloads/normdtd-spam.pdf

NormDTD was DOS-only
(https://nl.ijs.si/et/talks/Eurolan/silSGMLpubSWedit.html#normdtd)which
presumably means it will be happy in a modern DOS emulator.

[Near&Far, quote Debbie]
> and one fine day, they will change the Windows OS and it will stop
> working.

You will still be able to install Win95 and then install NFD in it :-)
Meanwhile there is still a small market for a good schema visualiser of
the calibre of Near&Far. Nothing currently available comes anywhere near
IMNSHO.