Publish descriptions for the utilization of Experimental Features. Which are added features for the benefit to user and/or are safe to disable vs. necessary for normal browser function? For example FTP support is enabled by default, but I don't find it's usage necessary. File System Access API is also enabled by default, is any part of this necessary for browser function? The NSURLSession WebSocket, how is this utilized? I have no use-case for WebRTC, are it's listed protocols safe to disable?