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Subject:      RE: Converse of \nonumber
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>>> Finding a name for the converse is a minor problem, as \number is
>>> already spoken for, and \nononumber is unacceptable.  Perhaps
>>> \numbereqn?

Knuth suggests that having found one bug in any program, one should always
search for similar bugs that might have been introduced by analogous
(mis-)thought processes.  In a similar way, one might search for a syntax
that would allow for the retraction of an arbitrary command, rather than
attempt to define the converse of all possible commands.  For that reason,
I would suggest

	\retract \nonumber

etc.

					Philip Taylor, RHBNC.