Re: A few questions about aligned maths

[Morgan Brassel <morgan.brassel@free.fr>]

Le Friday 14 March 2008 00:48:55 Aditya Mahajan, vous avez écrit :
> So, will this user interface be enough:
>
> \startformula \startmultline
>    \NC line 1 \FR
>    \NC line 2 \MR
>    \NC line 3 \LR
> \stopmultline \stopformula
>
> Lines with \FR are flush left, lines with \MR are centered, and lines with
> \LR are right flushed. (First row, middle row, last row; as in tables).
> multline also has \pushleft and \pushright with go against the ConTeXt way
> of things.

It seems great to me. Would it be possible to use \FR ou \LR for intermediate 
lines? It could be a way to get the same result as \pushleft and \pushright 
in amsmath. Anyway, I'm not sure this is a very useful feature: centered 
lines in the middle is clearly the best choice (at least for me!).

> It is also possible to just have \NR at each row, and let ConTeXt figure
> out the correct flushing. That will involve a two-pass algorithm, and I
> will give that a try.

If the use of \FR and \LR can address the problem of \pushleft and \pushright, 
the first solution would be more powerful... And maybe it's more coherent 
with ConTeXt tables.

> The other thing is placement of equation numbers. It is easy to implement
> multline so that equation number is always centered. I am not sure if the
> current ConTeXt mechanism allows for equation number to be placed on the
> bottom (similar to tbtags options).
>
> Aditya

As multline is supposed to be used to typeset one only equation, I guess the 
choice made in amsmath is the best for tag placement: last line if placed 
right and first line if placed left. But if it's not possible currently, a 
centered tag would not hurt me at all...

Morgan
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