[luatex] Overbar OpnType Maths

[Taco Hoekwater]

On 05/11/2011 11:47 PM, Maxime Chupin wrote:
> Hi!
>
> I do not understand what is Overbar in OpenType Maths tables. Microsoft
> description does not help me.  Can someone explain me ?

If you mean these:

   OverbarRuleThickness: thickness of the bar for \overbar
   OverbarVerticalGap: the space below the bar
   OverbarExtraAscender: the space above the bar

Best wishes,
Taco