[NTG-context] Extend the fraction bar

[Mojca Miklavec]

On 7/2/06, David Arnold wrote:
> All,
>
> How can I extend the main fraction bar in the following expression,
> making it a tad longer?
>
> \placeformula
> \startformula
> \dfrac{\dfrac{9+3x-2x^2}{x^2-16}}{\dfrac{4x^3-9x}{2x^2+5x-12}}.
> \stopformula

I don't know what \dfrac should be (I assumed \let\dfrac=\frac)
The most easy solutions is probably to put a \ or \, before and after
the content (if I understood your question correctly).

\dfrac{\dfrac{9+3x-2x^2}{x^2-16}}{\ \dfrac{4x^3-9x}{2x^2+5x-12}\ }.

If you use that a lot, something like \def\mainfrac#1#2{\frac{\ #1\
}{\ #2\ }} might be helpful.

Mojca