[O] the role of org-odt-preferred-output-format etc

[Uwe Brauer]

Hello

Maybe I misunderstood the manual 
http://orgmode.org/manual/Extending-ODT-export.html
and
http://orgmode.org/manual/Configuring-a-document-converter.html#Configuring-a-document-converter

I can successfully convert a org file to odt, but sometimes I need it to
be directly in doc format.

So I thought I set org-odt-preferred-output-format 
to «doc».

But then what?

Shall I use 

org-odt-convert

For example
(org-odt-convert "~/tex/Proy-MTM-2016/LaTeX-org/cv-libre.odt" "doc")

That did not work

I also checked the variable
org-odt-convert-process

which was set to «Libreoffice», I changed that to «unoconv», but that did
not help.

Any suggestion?

thanks

Uwe Brauer