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From: Terry Lambert <terry@lambert.org>
Message-Id: <199705150040.RAA13777@phaeton.artisoft.com>
Subject: Re: Is Thot (WYSIWIG editor) for you?
To: hasty@rah.star-gate.com (Amancio Hasty)
Date: Wed, 14 May 1997 17:40:50 -0700 (MST)
Cc: jfieber@indiana.edu, pgiffuni@fps.biblos.unal.edu.co,
        jmz@cabri.obs-besancon.fr, jkh@time.cdrom.com, hackers@FreeBSD.ORG
In-Reply-To: <199705142238.PAA21497@rah.star-gate.com> from "Amancio Hasty" at May 14, 97 03:38:44 pm
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> Whats the fundamental difference between an HTML  editor and a SGML editor?
> 
> It looks to me that HTML is a subset of SGML so by way of handling tags
> and structure it looks like  a good WYISWYG editor can be accomplished
> unless of course SGML brings in complexity such that it breaks the 
> algorithms to handle the HTML visualization/edit .

HTML is a DT defined by an SGML DTD.

Once again, in English:

	Hypertext Markup Language is a Document Type defined by
	a Simple Graphic Markup Language Document Type Description

That is, a general SGML editor can edit any document format for
which it has a DTD.

You could define a DTD for RTF, and edit RTF files.

You could define a DTD for WordPerfect files, and edit WordPerfect
files.

You could define a DTD for Word for Windows (if you could puzzle out
the file format), and edit MS Word files.

This is the beauty (and complexity) of a working SGML editor.

SGML is a definition language for specification of page definition
languages.


					Regards,
					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.