perigraphic

peri- +‎ graphic

perigraphic (not comparable)

1. Surrounding the graphics; sometimes applied to the material (preface, etc.) between the covers and the main content of a comic.
   • 2014, Ann Miller, Bart Beaty, The French Comics Theory Reader, page 195:

     What is attested by the perigraphic areas is not plot detail, but a particular visual tone. This results in a serious danger of redundancy: the front cover displays a synthetic image of the volume that is repeated, with a few variations, by the other available spaces. Instead of being put together in imaginative ways, the perigraphic areas are mostly used merely to illustrate the book […]

   • 2015, Christina Ionescu, Book Illustration in the Long Eighteenth Century:

     But from one century to the next, the status of illustrative images has changed. That they were placed in such nineteenth-century collections as the ones analysed here was not merely for peritextual, or perigraphic in the iconotext sense of the word, purposes.

• peritextual