That information was part of posting of the links to each record -
Sauherad parish in Telemark, Norway
At the top of the scanned image page is an option labeled "Bildeinformasjon:" [Norwegian version]/"Image Information"[English version] which is by default set to "Ingen" [Norwegian version]/"None" [English version]. Change that and magic is available. Of the three options I like "Øverst" [Norwegian version]/"On top" [English version] because it puts the additional information across the top of the page and is usually easier for me to see.
The first line "Kildeinformasjon:" [Norwegian version]/"Source information" [English version] is a really nice summary of the source of the information and is wonderful to have for making detailed source citations, footnotes, etc.