It's an "Annotation" which I guess is different than normal? https://harpers.org/sections/annotation/ https://harpers.org/sections/annotation/ From their page:

It's an "Annotation" which I guess is different than normal? https://harpers.org/sections/annotation/ https://harpers.org/sections/annotation/ From their page: Annotation: A closer look into the meanings and histories of everyday documents, diagrams, maps, and images.