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From: Richard Maine <Richard.Maine@nasa.gov>
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Date: Fri, 5 Sep 2003 07:53:34 -0700
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Subject: (SC22WG5.2976) Fiddling with paragraph numbers
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Malcolm Cohen writes:
 > I don't like having both line numbers and paragraph numbers.

Me neither.  Van shows that we can, but just because we can
doesn't mean we should.

 > In any case, we could already work that way if we wanted, while still using
 > the line numbers: just give the subclause number and (manually counted)
 > paragraph number within that.

I've had quite a bit of trouble with manually counting paragraphs in
the past.  Works fine when you have nothing but plain old text.  But
it doesn't take long at all before you start wondering exactly what
counts as a paragraph...and whether every reader will have the same
algorithm.  When you have bnf, does it count?  And for how many paras
if it is several bnf terms (including some multiple-line ones).  Do
constraints count as one paragraph each or as none at all or something
else?  If you have displayed material, how do you know whether the
line after it counts as the start of a new paragraph or not?  (There
is extra vertical space in either case.)  I have personally gotten
confused by all of those questions.

This usually drives me to much more long-winded explanations, at least
when I've felt that I had to write out things that way instead of
using page/line numbers.  I've ended up saying things like "the 3rd
paragraph after the numbered list in.." or "the 3rd paragraph after
the constraints following Rxxx" (the later form was from before we
had numbered constraints, which can slightly simplify it).  I have
generally *NOT* felt that paragraph number wihin a section was
adequate description in many cases.

It isn't the counting that is hard.  I think I can still count as high
as likeely to be necessary.  It is the decision as to what counts as a
paragraph and what doesn't.  Having the paragraphs explicitly marked
would help that.  (Heck, it would help even if the marks weren't
numbers.)  The convention that you distinguish paragraphs by the extra
space between them isn't good enough for this document.  Fortunately,
in reading for the technical content, you are not likely to have to
consider whether that counted as a new paragraph or not.  (Any cases
where the paragraph division isn't clear and might cause confusion
about the meaning should be reworded).  In reading citations that
reference paragraph numbers, you do have to consider it.

-- 
Richard Maine                |  Good judgment comes from experience;
Richard.Maine@nasa.gov       |  experience comes from bad judgment.
                             |        -- Mark Twain
