> ...Actually, according to that wording, even an
> empty element <target></target> would be non-compliant
> unless the translation is precisely an empty string.
>
> For some reason, nearly all tools generating XLIFF,
> including the mainstream ones, are priming untranslated
> target strings with source strings.
That's because, like Rodolfo interprets that the content of <target> can be blank, one can also interpret that a copy of the source is simply the translation in its initial form in a many steps process. After all the specification doesn't define what "translation" is.
Cheers,
-ys