> using temporary files is fine. If you operate on the lower level of
> 'put!>', you could even write the blob file directly.
I think the initial worry of Henrik was how to avoid writing a temp file
first, and then using 'blob!'.
As I wrote in my answer, the correct and simple way is
(out (blob Article 'body)
(prinl "a really long text") )
(put!> Article 'body T)
There is not more to blobs. It is just that the typical cases
of blobs, like images or PDFs, start out with a file.