http://www.rfc-editor.org/rfc/rfc3950.txt
RFC 3950: Tag Image File Format Fax eXtended (TIFF-FX) - image/tiff-fx MIME Sub-type Registration, L. McIntyre, G. Parsons, J. Rafferty2005-02-01T23:00:00-00:00This document describes the registration of the MIME sub-type image/tiff-fx. The encodings are defined by File Format for Internet Fax and its extensions. [STANDARDS-TRACK]