Galloway Reading

I followed the reading fairly well but was tripped up on one spot in particular. On page 25 Galloway begins discussing the relationship between play and the nature of language. Unfortunately I wasn’t able to follow this very well. When he said, “So at a basic level, play is simply how things transpire linguistically for Derrida, how, in a general sense, they happen to happen”, I didn’t understand at all. This concept makes zero sense to me. I was also confused as to how it fit into the essay. help?