[6] PFR は、 フォント形式の1つです。

仕様書

Web での利用

[7] NC4 が DHTML の機能の1つ (Webフォント) として実装していました。

[8] fontdef によって埋め込まれます。

[9] 実利用例は fontdef 参照。

歴史

[5] Dynamic HTML in Communicator, , https://web.archive.org/web/20001206092700/http://developer.netscape.com/docs/manuals/communicator/dynhtml/webfont1.htm#1032362

[1] Re: Font MIME types (Chris Lilley 著, 版) https://lists.w3.org/Archives/Public/www-style/2015Apr/0335.html

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

[3] 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.