1916, E. S. Roberts, A Companion to Greek Studies: Edited for the Syndics of the University Press Chapter Criticism and Interpretation 2. Epigraphy., In the case of pottery, it epigraphy is usually taken to include graffiti scratched with a sharp point, and even painted inscriptions which are made before firing as part of the design of a vase, but not written documents (ostraka), in which pot-sherds are merely used as a material to write on instead of papyrus.----