Thank you.

I believe that you understand my purpose.

You will note that that extended conversation has come to an end (I hope).
It went on much longer than I had intended.

I agree that the question whether context sensitive grammars are necessary
to describe usual markup demands in either a ``comfortable'' (please, feel
free to suggest a better description) syntax or in any syntax at all is
still an open question in this forum.

Sometimes, syntax can be found that permits a context free grammar to
be used; but, humans generally find that that grammar is difficult or
``painful'' to use.

Randolph J. Herber, [log in to unmask], +1 630 840 2966,
CD/OSS/CDF CDF-PK-149O Mail Stop 234
Fermilab, Kirk & Pine Rds., P.O. Box 500, Batavia, IL 60190-0500.
(Speaking for myself and not for US, US DOE, FNAL nor URA.)
(Product, trade, or service marks herein belong to their respective owners.)
N 41 50 26.3 W 88 14 54.4 and altitude 700' approximately, WGS84 datum.