Nicolas Goaziou writes:
> On second thought, we shouldn't bother too much about it, let the user
> provide any keyword, and turn it into a block of the same name.
>
> So, for example, both
>
>   #+include: "file.html" html
>
> and
>
>   #+include: "file.html" center
>
> are valid, even though the second one makes little sense.
>
> It is close to your initial approach, minus the "wrap" keyword, which
> seems unnecessary. If you agree with this suggestion, do you volunteer
> to finalize it, along with the required documentation?

Here's the patch for this: