There are two font families are here:

* Matthew Carter's Bitstream Charter (called Chortle2014d here)

* Paul Hunt's Source Sans Pro (Called UserAlt here)

Both fonts are open source fonts and are used in compliance with their
licenses.  Read below for legal details.

---

The fonts were edited using Fontforge, a free open-source font editor:

	http://fontforge.org/

TTF hinting was provided by ttfautohint 

	http://www.freetype.org/ttfautohint/

TTF -> WOFF conversion was done with sfnt2woff:

	http://samiam.org/fonts/code/woff-code.tar.bz2

TTF -> EOT conversion (for IE 6-8) was done with this web service:

	https://www.kirsle.net/wizards/ttf2eot.cgi

---
Notes on this Bitstream Charter variant

* Hinting provided by ttfautohint.  Bitstream Charter is finally a usable 
  screen font, both in Windows and on a Mac.

* TTF conversion done by Matthew Butterick.  Check out his beautiful Equity
  font:

	http://practicaltypography.com/equity.html

I have subsetted this font to make it as small as possible; only English
and Spanish are supported by this font.

I have also modified the E and F in the non-italic font to have smaller
serifs so it looks better as a screen font.

The original Bitstream Charter fonts, as donated to the MIT X Consortium
(now X.org), are available here:

	ftp://ftp.x.org/pub/X11R7.7/src/font/font-bitstream-type1-1.0.3.tar.bz2

Matthew Butterick's conversion of Bitstream Charter is available here:

	http://practicaltypography.com/charter.html 

My version of Bitstream Charter is here:

	http://samiam.org/fonts/best-opensource/charter-2014-06.zip

My variant of Bitstream Charter, with modified "E" and "F" letters:

	http://samiam.org/fonts/other/Chortle2014b.zip	

This is the font used for serif text.

---
Notes on UserAlt 

UserAlt is a derivative of Source Sans Pro which, since modified,
has had its name change.  The following changes have been made:

1) Subsetting.  Only English and Spanish are supported.

2) No open type (Open type renders poorly in Windows, even Windows 7); only
   true type .ttf files used.

3) Different forms (included with Source Sans) for "g" and "l" to look 
   a little more conservative.

4) Fonts rehinted with ttfautohint.

5) Tighter line spacing.

This is the font used for sans serif text.

The original Source Sans Pro is available here:

http://sourceforge.net/projects/sourcesans.adobe/files/

http://samiam.org/fonts/best-opensource/Source-Sans-Pro/

Source Sans Pro was designed by Paul Hunt for Adobe.

--

This is the license for Chortle2014 (modified Bitstream Charter):

(c) Copyright 1989-1992, Bitstream Inc., Cambridge, MA.

You are hereby granted permission under all Bitstream propriety rights
to use, copy, modify, sublicense, sell, and redistribute the 4 Bitstream
Charter (r) Type 1 outline fonts and the 4 Courier Type 1 outline fonts
for any purpose and without restriction; provided, that this notice is
left intact on all copies of such fonts and that Bitstream's trademark
is acknowledged as shown below on all unmodified copies of the 4 Charter
Type 1 fonts.

BITSTREAM CHARTER is a registered trademark of Bitstream Inc.

--

This is the license for UserAlt (modified Source Sans Pro):

Copyright 2010, 2012 Adobe Systems Incorporated (http://www.adobe.com/), with Reserved Font Name 'Source'. All Rights Reserved. Source is a trademark of Adobe Systems Incorporated in the United States and/or other countries.

This Font Software is licensed under the SIL Open Font License, Version 1.1.

This license is copied below, and is also available with a FAQ at: http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded, 
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
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 THE
COPYRIGHT HOLDER 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.
