We have finally found where in metadata to store a picture title in order to have Fotki automatically read it. “Surprisingly enough,” it should be in the metadata field “Title” (and not in “Headline” that I used in the other two Himeji albums).
This time the pictures are extensively commented. In addition, the comments for Himeji Castle are stored inside the relevant picture files in the form of metadata. The same – with the titles: they are stored in the metadata field “Headline”.