Original sentence: , as were wood, ivory, and plaster, which may also be an indication of seasonal shortages of papyrus.Another common practice was the tearing off of pieces of papyrus documents to use for small letters, indicating possible seasonal shortages caused by the limited growing season of Cyperus papyrus.It is thought that papyrus rolls were moderately expensive commercial items.Likewise, the original Egyptian pigments were abandoned in favor of Greek lead-based inks.Many surviving rolls are palimpsests, the original contents having been erased to allow the rolls' re-use for new written works.Small ceramic or limestone ostraca, known as potsherds, were also used as writing media.With pigments of carbon black and red ochre, the reed pen was used to write on scrolls of papyrus—a thin material made from beating together strips of pith from the Cyperus papyrus plant
Edited sentence: In addition to stone, ceramic ostraca, and papyrus, writing media also included wood, ivory, and plaster.It also explains the frequent use of ostraca and limestone flakes as writing media for shorter written works.It is thought that papyrus rolls were moderately expensive commercial items, since many are palimpsests which have their original contents erased to make room for new written works.Likewise, the original Egyptian pigments were discarded in favor of Greek lead-based inks.This, alongside the thrifty practice of tearing off pieces of papyrus documents to make smaller letters, also suggests that there were seasonal shortages caused by the limited growing season of Cyperus papyrus.With pigments of carbon black and red ochre, the reed pen was used to write on scrolls of papyrus — a thin material made from beating together strips of pith from the Cyperus papyrus plant — as well as on small ceramic or limestone ostraca known as potsherds