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Re: GL3 vs. DoV (Was: Plan/proposal for DoV group)

From: <david_marston@us.ibm.com>
Date: Sun, 20 Apr 2003 11:31:16 -0400
To: www-qa-wg@w3.org
Message-ID: <OFA5665443.882F83AC-ON85256D0E.00543B5B-85256D0E.00554E19@lotus.com>

DM>strict conformance (*all* products in a class must be functionally
DM>the same) [was a policy] that may...apply...
DM>only to some classes of product.

MS>As far as applying to only some classes of products, I don't believe
MS>this is true.  Strict conformance clearly applies to all classes of

Sorry if I was being unclear. I can produce an example of what I mean
from MathML. Recall that MathML is an XML vocabulary that has a dual
purpose; formulas are written in such a way that a visual renderer
(1st Class of Product) can draw the formula with all the symbols
appropriately sized and placed, while a math interpreter (2nd CoP)
can correctly act upon the formula in math terms. The latter CoP is
broader, encompassing symbolic differentiators, a tool that plugs in
discrete values and obtains a numerical result, a tool that solves
for a different variable, etc.

It is certainly acceptable for the writers of MathML to impose strict
conformance on the first CoP, requiring that all such renderers be
able to draw the entire vocabulary, while not imposing a strict
conformance policy on products in the second CoP.
.................David Marston
Received on Sunday, 20 April 2003 11:32:01 UTC

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