Jean-Marc Lasgouttes wrote:
> Angus> Shrug. I expect a class that redefines the default font to
> also Angus> redefine the default elsewhere too. Is that so
> unreasonable?
> 
> Well, roman in LaTeX world means serif (if I understand correctly).
> It does not mean default. The fact that most classes use roman as
> default font is kind of irrelevant.
> 
> \defaultfont anlways select the default font, OTOH.
> 
> Angus> Of course I can define a math macro
> 
> Angus> \newcommand{\mathtext}[1]{\mathsf{#1}}
> 
> Angus> and use it to separate markup from input, but is that really
> Angus> what I'm expected to do here?
> 
> How do you use this typically? 

D_{\mathrm{eff}}=D_{\mathrm{mol}}\frac{A_{\mathrm{central\: 
duct}}}{A_{\mathrm{whole}}}\]

> In LyX 'M-c space' should change the
> font to the right one (unless there is a bug).

Ahhhhhhhhhhhhh. \textnormal. That's *exactly* what I'm looking for. 
Thank you, JMarc.
 
> PS: I would be very grateful if you could take a look at the patch I
> just sent to lyx-devel. I need Qt help.

Ok.

-- 
Angus

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