[luatex] "Proper" use of \Udelimiterover &c

[Taco Hoekwater]

On 07/14/2010 12:13 PM, ulrik.vieth at arcor.de wrote:
>> Ulrik, can you try this overbrace stuff in Word to see how it looks?
>
> Enclosed is a PDF from Word 2007 using CambriaMath.
>
> In Word, the overbrace stuff is hidden in the accents palette.
> You can choose between a simple overbrace or and overbrace
> with an extra group (which TeX typesets as \mathop\limits).
>
> Hope this helps to clarify your issues.

Thanks. It sure looks like I am misinterpreting something in
the luatex implementation.

Best wishes,
Taco