@techreport{ietf-calext-subscription-upgrade-06, number = {draft-ietf-calext-subscription-upgrade-06}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/html/draft-ietf-calext-subscription-upgrade-06}, author = {Michael Douglass}, title = {{Calendar subscription upgrades}}, pagetotal = 15, year = 2022, month = mar, day = 22, abstract = {This specification updates RFC5545 to add the value DELETED to the STATUS property. This specification also adds values to the Preferences Registry defined in RFC7240 to add the subscribe-enhanced-get and limit preferences and to the link relations directory defined in RFC8288.}, }