🚀 go-pugleaf

I wrote:

> I was wondering what is the preferred way of formatting
> numbers in exponential notation, e.g.,

	   -1.23e-4

The responses were very helpful.  Several people suggested:

	$-1.23 \times 10^{-4}$

This seems to be the most esthetically pleasing choice.
It is easily implemented by:

	\newcommand\expnum[2]{\mbox{$#1 \times 10^{#2}$}}
	\expnum{-1.23}{-4}

The only drawback is readability of the source file --
it's awkward having \expnum macros sprinkled in it --
but I can certainly live with that.

Many thanks to the people who responded.

Andy