- From: B. Tommie Usdin <btusdin@mulberrytech.com>
- Date: Fri, 20 Jun 1997 19:17:10 -0400
- To: "Eve L. Maler" <elm@arbortext.com>
- Cc: w3c-sgml-wg@w3.org
Eve L. Maler wrote: >Having parameter entities for just (1) complete declarations (modules), (2) >complete model groups (nearly equivalent to GI name groups), and (3) >keywords for marked sections (switches) greatly impoverishes the set of >useful PEs. You don't have PEs for: > >4 Individual attribute specifications (common attributes) >5 Sets of elements with which you build up repeatable-OR content models > ("classes" and "mixtures" in Jeanne's and my methodology) >6 Other content model subgroups >7 Other things that are less needful, but still useful > >If I can't have at least 1 through 5, I can't get away with doing >high-quality, complex production DTDs. I agree that 1, 2, 3, and 5 are essential to the complex DTD world. (I think we can live without 4, although I want it.) But there's another aspect of PEs that isn't on Eve's list that I feel is important; the ability to declare them multiple times, and an unambiguous rule about which over-rides which. I don't actually care if the first, last, longest, or cutest is used as long as I can declare several and know which will be ignored and which active. -- Tommie ====================================================================== B. Tommie Usdin Phone: 301/231-6934 Mulberry Technologies, Inc. Fax: 301/231-6935 6010 Executive Blvd., Suite 608 E-mail: btusdin@mulberrytech.com Rockville, MD 20852 WWW: http://www.mulberrytech.com ======================================================================
Received on Friday, 20 June 1997 19:17:50 UTC