Thanks Siegfried and Uwe for the replies. That's all I needed.
However, I found something rather less than obvious.
The beginning of the math.pdf manual (very useful -- I wasn't aware of it)
says
the option Use AMS math package must be used in the document settings
but if only "automatically use amsmath package" is checked, it is not
enough. It must be unchecked in order to enable the "use amsmath package"
checkbox below.
Daniel CLEMENT
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Saturday, February 02, 2008 8:53 PM
> To: [EMAIL PROTECTED]
> Cc: LyX
> Subject: Re: Custom function names
>
>
> Daniel CLEMENT schrieb:
>
> > LyX has a convenient drop-down list for math function names,
> but I'd like to
> > add some.
> >
> > E.g. it is customary (in French) to call "ch" instead of "cosh" the
> > hyperbolic cosine function.
>
> Have a look at section 15 of this manual that will be part of the
> upcoming LyX 1.5.4:
> http://wiki.lyx.org/uploads/LyX/LyXDevelDocumentation/1.5/Math.pdf
> (from http://wiki.lyx.org/LyX/DocumentationDevelopment)
>
> regards Uwe
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