Without any context I would say it's about the literary style. It could still be used to describe the activity of writing, in order to say that, for example, writing things down is great for memorising them. Otherwise it seems a bit strange to me... Does this sentence make any sense with "writing" meaning "handwriting" in english? Because as activity of and style it makes perfect sense. "Handwriting" in greek is "γραφικός χαρακτήρας".