Common to current practice
of research, of writing and composition, and publishing, are the framed workings— browser, word processor, formatter.
The process of construction
is made within the illuminated bounds of the device itself, and the reader in a document viewer or browser reads likewise.
The difference of sensation between the handling of the pages of a book and the navigation of active frames is not replicated in the focus of the eye and the brain, which is identical.
The directional movement from page to page, or from frame to frame, is contrasted by just the physical and actual—the hand and the means.