Request for NDPI sample with three-character reference tag

[Benjamin Gilbert]

Hi all,

I'm looking for an NDPI slide with a reference tag (the user-supplied
slide identification number, reflected in OpenSlide's
`hamamatsu.Reference` property) that is one to three characters long.
There's an ambiguity in the NDPI format this would help to clear up.
If anyone knows of such a sample or can create one, please post a link
here or submit it to our upload form at
<https://openslide.org/submit/>.

Thanks!
--Benjamin Gilbert