RFC 3073 (rfc3073) - Page 2 of 6

Portable Font Resource (PFR) - application/font-tdpfr MIME Sub-type Registration

RFC 3073                          PFR                         March 2001


3. PFR Definition

   PFR (Portable Font Resource) is defined by Bitstream Inc. in [PFR].
   The documentation can be obtained from Bitstream at:

   Bitstream Inc.
   215 First Street
   Cambridge MA 02142 U.S.A.
   Phone: +1 617 497 6222
   Fax:   +1 617 868 0784

   A copy of this specification can also be found at:

   http://www.bitstream.com/pfrspec/index.html

   While a brief scope and feature description is provided in this
   section as background information, the reader is directed to the
   original PFR specification [PFR] to obtain complete feature and
   technical details.

3.1 PFR Scope

   A PFR contains a set of glyph shapes.  Each glyph shape is associated
   with a character code.  The PFR format is designed to be both compact
   and platform-independent.  It is intended to facilitate accurate
   rendering of fonts in environments whether or not they have the
   required fonts already installed.

   The glyph shape definitions in a PFR are resolution-independent.
   This allows glyph definitions to be displayed or printed on devices
   with a wide variety of resolutions.  It also allows glyphs to be
   rendered at any size.

3.2 PFR Features

   Some of the features of the PFR format are:

    - Compact representation of glyph shapes

    - Independent of byte order and operating system

    - Independent of output device resolution

    - Fully scalable to any glyph size

    - Optional inclusion of bitmap glyph images

    - Adopted as the font standard by DAVIC, DVB, and DTG



Collins                      Informational