* The default GTK icons were not overridden by the GNOME theme due to
  a bug which was fixed in GNOME 2.15. Once GNOME 2.16 is in wide
  circulation, the GTK icons should be replaced with the equivalent
  GNOME icons.

* Recipe for Creating PBM Versions

1. Edit .xpm image in GIMP.
2. Image > Mode > Indexed. Check Use Black/White Palette and No
   Color Dithering.
3. File > Save As file.xbm.
4. Run xbmtopbm < file.xbm > file.pbm.

Thanks to jan.h.d@swipnet.se for the help.

Alternatively, run 'convert' from ImageMagick:

  convert file.xpm file.pbm


COPYRIGHT AND LICENSE INFORMATION FOR IMAGE FILES

* The following icons are part of Emacs.  All are licensed under the
  GNU General Public License version 3 (see COPYING) or later.
  The xpm and svg files contain copyright and license information, but
  it is reproduced here for convenience.

File: mh-logo.xpm
  Author: Satyaki Das
  Copyright (C) 2003-2021 Free Software Foundation, Inc.

Files: gnus.pbm
  Author: Luis Fernandes <elf@ee.ryerson.ca>
  Copyright (C) 2001-2021 Free Software Foundation, Inc.

Files: splash.png, splash.svg, splash.pbm, splash.xpm
  Author: Francesc Rocher <francesc.rocher@gmail.com>
  Copyright (C) 2008-2021 Free Software Foundation, Inc.

Files: checked.xpm, unchecked.xpm
  Author: Chong Yidong <cyd@stupidchicken.com>
  Copyright (C) 2010-2021 Free Software Foundation, Inc.


* The following icons are from GTK+ 2.x. They are not part of Emacs, but
are distributed and used by Emacs.  They are licensed under the
GNU Library General Public License version 2 or later.  See the source
of the gtk+ package for more information.

  close.xpm copy.xpm cut.xpm help.xpm home.xpm index.xpm info.pbm
  info.xpm jump-to.xpm left-arrow.xpm new.xpm open.xpm paste.xpm
  preferences.xpm print.xpm refresh.xpm right-arrow.xpm save.xpm
  saveas.xpm search.xpm sort-ascending.xpm sort-descending.xpm
  spell.xpm undo.xpm up-arrow.xpm

  back-arrow.xpm and fwd-arrow.xpm are slightly modified undo and redo.
  diropen.xpm is file-manager.png from Gnome hicolor theme.


* The following icons are from GNOME 2.x. They are not part of Emacs,
but are distributed and used by Emacs.  They are licensed under the
GNU General Public License version 2 or later.  See the source of
the gnome-icons-theme package for more information.

Emacs images and their source in the GNOME icons stock/ directory:

  attach.xpm                document/stock_attach
  bookmark_add.xpm          actions/bookmark_add
  cancel.xpm                slightly modified generic/stock_stop
  connect.xpm               net/stock_connect
  contact.xpm               net/stock_contact
  data-save.xpm             data/stock_data-save
  delete.xpm                generic/stock_delete
  describe.xpm              generic/stock_properties
  disconnect.xpm            net/stock_disconnect
  exit.xpm                  generic/stock_exit
  lock-broken.xpm           data/stock_lock-broken
  lock-ok.xpm               data/stock_lock-ok
  lock.xpm                  data/stock_lock
  redo.xpm                  generic/stock_redo
  search-replace.xpm        slightly modified generic/stock_search-and-replace
  next-page.xpm             navigation/stock_next-page
  refresh.xpm               generic/stock_refresh
  separator.xpm             ?
  show.xpm                  slightly modified document/stock_new
  sort-ascending.xpm        slightly modified data/stock_sort-ascending
  sort-column-ascending.xpm data/stock_sort-column-ascending
  sort-criteria.xpm         data/stock_sort-criteria
  sort-descending.xpm       slightly modified data/stock_sort-descending
  sort-row-ascending.xpm    data/stock_sort-row-ascending
  zoom-in.xpm               navigation/stock_zoom-in
  zoom-out.xpm              navigation/stock_zoom-out

  next-node.xpm and prev-node.xpm are from gthumb version 2.0 (part of
  GNOME 2.x) where they are called next-image-24.png and prev-image-24.png.
  up-node.xpm is just next-node.xpm rotated 90 degrees.

  Some icons in the mail/ and gnus/ subdirectories are also taken
  from this source (see their separate README files).

The images in the low-color/ subdirectory are low-color versions of
the files of the same name in this directory, and are subject to the
same conditions.

The *.pbm files were generally converted from *.xpm by running GIMP or
ImageMagick's 'convert'.


* The following icons are from the Adwaita Icon Theme (made by the
GNOME project).  They are not part of Emacs, but are distributed and
used by Emacs.  They are licensed under either the GNU LGPL v3 or the
Creative Commons Attribution-Share Alike 3.0 United States License.

To view a copy of the CC-BY-SA licence, visit
http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
Commons, 171 Second Street, Suite 300, San Francisco, California 94105, USA.

For more information see the adwaita-icon-theme repository at:

    https://gitlab.gnome.org/GNOME/adwaita-icon-theme

Emacs images and their source in the Adwaita/scalable directory:

  checked.svg               ui/checkbox-checked-symbolic.svg
  unchecked.svg             ui/checkbox-symbolic.svg
  checkbox-mixed.svg        ui/checkbox-mixed-symbolic.svg
  radio.svg                 ui/radio-symbolic.svg
  radio-mixed.svg           ui/radio-mixed-symbolic.svg
  radio-checked.svg         ui/radio-checked-symbolic.svg
  down.svg                  ui/pan-down-symbolic.svg
  left.svg                  ui/pan-start-symbolic.svg
  right.svg                 ui/pan-end-symbolic.svg
  up.svg                    ui/pan-up-symbolic.svg