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Are PIs useful?

From: Paul Prescod <papresco@calum.csclub.uwaterloo.ca>
Date: Tue, 13 May 1997 15:51:45 -0400 (EDT)
Message-Id: <199705131951.PAA03780@calum.csclub.uwaterloo.ca>
To: w3c-sgml-wg@w3.org
> PIs are allowed to users in XML (which I believe to be a mistake, but I'll
> simply never use them, and progandize against their use, when I have a
> chance). However, their use in XML itself has been very sensible: they
> allow us to add the equivalent of new declarations and DTD features to XML
> -- without having to use SGML-incompatible (or SGMl-invisible) syntax.

Why wouldn't PIs be useful for the same reasons in XML that they are in SGML?
Is it unreasonable to think that maybe someday someone will use them to define
an application profile of XML in the same way that we have defined one of 

 Paul Prescod
Received on Tuesday, 13 May 1997 15:51:48 UTC

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