https://app.knowbase.one/vault/rfc/docid/1836
RFC1642: UTF-7 - A Mail-Safe Transformation Format of Unicode
Network Working Group D. Goldsmith Request for Comments: 1642 M. Davis Category: Experimental Taligent, Inc. July 1994 ...
https://app.knowbase.one/vault/rfc/docid/2400
RFC2152: UTF-7 A Mail-Safe Transformation Format of Unicode
Network Working Group D. Goldsmith Request for Comments: 2152 Apple Computer, Inc. Obsoletes: RFC 1642 M. Davis Category: Informational Taligent, Inc. ...