# [OS X TeX] {DON'T} Use $$...$$, in LaTeX

Fri Sep 8 16:45:24 CEST 2006

On Sep 8, 2006, at 10:35 AM, André Bellaïche wrote:

> As far as I know (I have just tried \abovedisplayskip = 5cm, to be
> sure), equations displayed by $$...$$ are sensitive to some changes
> of LaTeX parameters. Does there exists other features which they
> would ignore ?

Yes. (BTW, \abovedisplayskip is a Plain TeX setting if memory serves.)

Try this:

\documentclass[fleqn]{article}
\begin{document}
This is an example of an equation using brackets:
$a^2 + b^2 = c^2$
which honours the left alignment specified in the document preamble.

This is an example of an equation as Plain TeX would set it:
$$a^2 + b^2 = c^2$$
which doesn't
\end{document}

William

--
senior graphic designer
Fry Communications

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