Hallo Wolfgang,
> You're mixing different things.
> > What is the difference between
> >
> > \setupletterstyle[option][backaddress=yes]
> >
> With \setupletterstyle[<element>=yes|no] you can show or hide
> elements
ok!
> > \setupletterstyle[backaddress][alternative=yes]
> >
> > In 'default.nli' I found
> >
> > \defineletterelement[\v!backaddress][\v!auto]
> > {\doifelselettervalue\c!backaddress
> > {\lettervalue\c!backaddress}
> > {\lettervalue\c!fromname
> > \doiflettervalue\c!fromaddress\\
> > \lettervalue\c!fromaddress}}
> >
> > what I interpret in the following way:
> >
> > If 'backaddress'=auto
> > If exist a constant 'backaddress'
> > use it
> > else
> > compose one from 'fromname' and 'fromaddress'
> >
> The constant needs a content, if there is no content for
> 'backadress' the field is filled with 'fromname' and 'fromaddress'.
So let's test if I have understand this:
With
\setupletterstyle[option][backaddress=no|yes]
one can disable|enable a backaddress.
With
\setupletterstyle[backaddress][alternative=no|yes|auto]
one can select between
no backadress|
a composed backaddress from the fromdata|
the yes behaviour if no predefined backaddress is defined
And to define such a own backaddress, one uses
\setlettervalue{backaddress}{something}
Hopefully this is right!
Wolfgang
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