https://app.knowbase.one/vault/rfc/docid/7480
RFC6868: Parameter Value Encoding in iCalendar and vCard
Internet Engineering Task Force (IETF) C. Daboo Request for Comments: 6868 Apple Updates: 5545, 6321, 6350, 6351 February 2013 Category: Standards Track ISSN: 2070-1721 Parameter Value Enc...