[OS X TeX] R, paradigm to bring into the LaTeX world?

Martin Costabel costabel at wanadoo.fr
Tue Oct 24 06:19:30 EDT 2006


Paul Smyth wrote:
> Quick question Martin,
> 
> If \atop is deprecated in LaTeX, what's it's replacement?

AFAIK, pure LaTeX has no replacement, except for \frac{}{} instead of 
{{}\over{}}.

The amsmath package has the very general \genfrac command plus some 
special cases that have their own names. In the version of amsldoc.pdf 
that I have here (found either via "locate" or by "texdoc amsldoc", it 
is explained on page 18. The result of {#1\atop#2} would be achieved by
\genfrac{}{}{0pt}{}{#1}{#2}

In the technote.pdf sitting beside amsldoc.pdf ("texdoc 
amsmath/technote"), on page 2 there is a detailed explanation why 
introducing \atop and related commands was one of the very few bad ideas 
in Knuth's TeX and why amsmath tries to get rid of them.

-- 
Martin


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