• From: Sean Mc Grath <digitome@i...>
• To: xml-dev@i...
• Date: Fri, 19 Dec 1997 18:40:18 GMT

The concept of a DTD has a resonance with data driven programming such as
JSP Jackson Structured Programming and JSD - Jackson System Design.

I have on occasion used DTDs to document time ordered interfaces to objects. It
can be a very powerful technique!

Take a really simple object interface - an object with open,close,read,write
methods.
These have a time ordering which is not captured in this:
        int open();
        int close();
        int read();
        int write();

Compare this:-

<!element interface (open,(read|write)*,close)>
Sean Mc Grath
sean at digitome dot com




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