Suggested addition to File Transfer Protocol
RFC 281, “Suggested addition to File Transfer Protocol”, is an Unknown document published in December 1971 by A.M. McKenzie. It updates RFC 265. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
The canonical text of RFC 281 is hosted at rfc-editor.org. Available in TXT,HTML.