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[Marten Bauer <address@hidden>]

Nicolas Ratier wrote:

> > How to place subscripts and superscripts above and below of the
> > big operators (as usual). (the commands _ and ^ place them at the right
> > of the operators)
> >    
>
> I forgot to say that the big operator are above a fraction ...
>
>
>  
Hello Ncolas,

I think I can give you an example how I do it. For exampl to write 
something like this sum(j=0,n,a_j)/sum(k=0,m,b_j) in
TeXmacs I do the following steps: (<A> - Alt, <S>-Shift)

1. <A>-f                   (Fraction)
2. <S>-F5 <S>-s      (To get Big Sum Sign)
3. <S>-<Cursorleft> (To mark the sum sign (red box))
4. <A>-b                  (to get script below (under sum sign))
5. j=0
6. <Cursor top>        (to jump behing the sum sign)
7. <S>-<Cursorleft> (same as 3. to mark the sum sign)
8. <A>-a                   (to get script above (over the sum sign))
...

If there is a faster way to get the same result I'm also intrested.

Greetings
Marten