Admin/isabelle_fonts/README

update README (actually after update of component);

Isabelle DejaVu fonts
=====================

The Isabelle fonts are subject to the same BSD-3-clause license as Isabelle.

TTF files are produced automatically from the Deja Vu font family with symbols
from the IsabelleSymbols font (formerly IsabelleText):

  isabelle build_fonts -d dejavu-fonts-ttf-2.37/ttf

The IsabelleSymbols template (see Admin/isabelle_fonts in the repository) has
been assembled manually, by composing glyphs from Bluesky TeX fonts (scaled
222%) with some additions from DejaVu Sans Mono and DejaVu Sans. Some
additional symbols are from Symbola, see http://greekfonts.teilar.gr "In lieu
of a licence; fonts and documents in this site are free for any use; George
Douros".

The blackboard-bold glyphs are from font "txmia" (package "pxfonts"):
these are subject to GPL.


    Makarius
    21-Mar-2021


----------------------------------------------------------------------------

Computer Modern PostScript Fonts
(Adobe Type 1 format)
2001/06/06

-----------------------------------------------------------------------------
The PostScript Type 1 implementation of the Computer Modern fonts produced by
and previously distributed by Blue Sky Research and Y&Y, Inc. are now freely
available for general use. This has been accomplished through the cooperation
of a consortium of scientific publishers with Blue Sky Research and Y&Y.
Members of this consortium include:

        Elsevier Science
        IBM Corporation
        Society for Industrial and Applied Mathematics (SIAM)
        Springer-Verlag
        American Mathematical Society (AMS)

In order to assure the authenticity of these fonts, copyright will be held
by the American Mathematical Society. This is not meant to restrict in any
way the legitimate use of the fonts, such as (but not limited to) electronic
distribution of documents containing these fonts, inclusion of these fonts
into other public domain or commercial font collections or computer
applications, use of the outline data to create derivative fonts and/or
faces, etc. However, the AMS does require that the AMS copyright notice be
removed from any derivative versions of the fonts which have been altered in
any way. In addition, to ensure the fidelity of TeX documents using Computer
Modern fonts, Professor Donald Knuth, creator of the Computer Modern faces,
has requested that any alterations which yield different font metrics be
given a different name.

----------------------------------------------------------------------------
----------------------------------------------------------------------------

Bitstream Vera Fonts Copyright

The fonts have a generous copyright, allowing derivative works (as
long as "Bitstream" or "Vera" are not in the names), and full
redistribution (so long as they are not *sold* by themselves). They
can be be bundled, redistributed and sold with any software.

The fonts are distributed under the following copyright:

Copyright
=========

Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream
Vera is a trademark of Bitstream, Inc.

Permission is hereby granted, free of charge, to any person obtaining
a copy of the fonts accompanying this license ("Fonts") and associated
documentation files (the "Font Software"), to reproduce and distribute
the Font Software, including without limitation the rights to use,
copy, merge, publish, distribute, and/or sell copies of the Font
Software, and to permit persons to whom the Font Software is furnished
to do so, subject to the following conditions:

The above copyright and trademark notices and this permission notice
shall be included in all copies of one or more of the Font Software
typefaces.

The Font Software may be modified, altered, or added to, and in
particular the designs of glyphs or characters in the Fonts may be
modified and additional glyphs or characters may be added to the
Fonts, only if the fonts are renamed to names not containing either
the words "Bitstream" or the word "Vera".

This License becomes null and void to the extent applicable to Fonts
or Font Software that has been modified and is distributed under the
"Bitstream Vera" names.

The Font Software may be sold as part of a larger software package but
no copy of one or more of the Font Software typefaces may be sold by
itself.

THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL
BITSTREAM OR THE GNOME FOUNDATION BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT
SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.

Except as contained in this notice, the names of Gnome, the Gnome
Foundation, and Bitstream Inc., shall not be used in advertising or
otherwise to promote the sale, use or other dealings in this Font
Software without prior written authorization from the Gnome Foundation
or Bitstream Inc., respectively. For further information, contact:
fonts at gnome dot org.

----------------------------------------------------------------------------