本項は歴史的事項を説明しています。本項の内容の一部または全部は、現在の状況とは異なるかもしれません。
(なお本項の内容の一部または全部は、互換性または歴史的連続性のために現在も有効な場合もあります。しかし新たに利用することは避けるべきです。)
[5] Dynamic HTML in Communicator, , https://web.archive.org/web/20001206092700/http://developer.netscape.com/docs/manuals/communicator/dynhtml/webfont1.htm#1032362
TrueDoc Portable Font Resource was implemented in a browser (in Netscape 4) but is no longer relevant; with the move from closed-source Netscape to open-source Mozilla that format, which required payment of license fees to Bitstream, was dropped.
[2] RFC 3073 - Portable Font Resource (PFR) - application/font-tdpfr MIME Sub-type Registration ( 版) https://tools.ietf.org/html/rfc3073
The PFR media type has been previously registered with IANA as
application/vnd.truedoc. In view of its subsequent widespread
adoption as a standard font format by multiple standards bodies who
have relationships with the Internet community, Bitstream has been
asked to re-register this media type within the IETF tree.