It comes from the flow of edition: remove the last element of a list (which typically is on its own line), forget about the fact that there is a comma at the en

It comes from the flow of edition: remove the last element of a list (which typically is on its own line), forget about the fact that there is a comma at the end of the previous line. But both optional commas and optional double-quotes are provided by Hjson <https://hjson.org/> https://hjson.org/>. They do not advocate its use in protocols, however.