AUTHORS
# This is the official list of project authors for copyright purposes.
# This file is distinct from the CONTRIBUTORS.txt file.
# See the latter for an explanation.
#
# Names should be added to this file as:
# Name or Organization
The STI Pub Companies
# The STI Pub Companies is a consortium consisting of AIP Publishing,
# American Chemical Society, American Mathematical Society, American
# Physical Society, Elsevier, Inc., and The Institute of Electrical
# and Electronic Engineers, Inc.
MicroPress, Inc. , with Reserved Font Name TM Math.
Elsevier, Inc.
Adobe Systems Incorporated.
CONTRIBUTORS
# This is the list of people who have contributed to this project,
# and includes those not listed in AUTHORS.txt because they are not
# copyright authors. For example, company employees may be listed
# here because their company holds the copyright and is listed there.
#
# Names should be added to this file as:
# Name
Ross Mills
John Hudson
Paul Hanslow
Khaled Hosny
David M. Jones
FONTLOG
FONTLOG
STIX Two font family
========================
This file provides detailed information on the STIX Two family of
fonts. This information should be distributed along with the STIX Two
fonts and any derivative works.
Please direct any questions or general comments to the STIX Fonts
project. Bug reports and technical support issues should be submitted
through
https://github.com/stipub/stixfonts
where you can also find a list of known issues.
Basic Font Information
----------------------
INTRODUCTION
The Scientific and Technical Information eXchange (STIX) fonts are
intended to satisfy the demanding needs of authors, publishers,
printers, and others working in the scientific, medical, and technical
fields. They combine a comprehensive Unicode-based collection of
mathematical symbols and alphabets with a set of text faces suitable
for professional publishing. The fonts are available royalty-free
under the SIL Open Font License.
Version 2.0.0 of the STIX fonts, now known as "STIX Two", is a
thorough revision undertaken by the renowned type house Tiro Typeworks
Ltd. (https://www.tiro.com). The STIX Two fonts consist of one Math
font, two variable text fonts (STIXTwoTextVF-Roman and
STIXTwoTextVF-Italic), and eight static text fonts (Regular, Italic,
Medium, Medium Italic, SemiBold, SemiBold Italic, Bold, and Bold
Italic) derived from the variable fonts. Together, they provide a
uniform set of fonts that can be used throughout the production
process, whether that be a traditional print-only process, an entirely
electronic one, or a combination of the two.
The STIX project began through the joint efforts of American
Mathematical Society (AMS), American Institute of Physics (AIP),
American Physical Society (APS), American Chemical Society (ACS), The
Institute of Electrical and Electronic Engineers (IEEE), and Elsevier.
These companies are collectively known as the STI Pub companies.
A FRESH TAKE ON TIMES ROMAN
The original version of STIX was based on Times Roman, which has now
been updated for the digital age.
As is well known, Times Roman was originally intended for printing the
London Times. What is not generally appreciated is that the
production quality of the *Times* was atypically high: It was printed
on unusually high-quality paper on presses that operated more slowly
than most newspaper presses. This allowed for the design of a
typeface that could exploit this level of care: serifs could be much
finer and counters (enclosed areas such as that in the lowercase e)
could be much smaller than in other newspaper typefaces. These
features of the font have not always fared well in less exacting
environments. At the same time, a notable quirk of the Times Roman
family is that the bold font is, in many respects, strikingly
dissimilar to the roman font.
Tiro Typeworks explain their approach to updating the Times Roman
basis of STIX as follows:
"Our principal goal in approaching STIX Two was to address several
inherent deficiencies in the Times New Roman model as well as
expand the typographic features. This process necessarily
involved diverging somewhat from Times, given that many features
of that typeface are either incompatible with current printing
methods and electronic reading environments, and some others too
esoteric to repeat. That said, the essential 'Times-ness'
remains, we believe, and such changes won't distract readers and
users in any negative way.
"At the core of Times' problems was inappropriate digitization,
using an optical size model too large to be scaled down to text
sizes, with compensations appropriate to its original purpose and
printing technique, but not for 21st century conditions. We have
also re-thought somewhat overall proportions and spacing, with
changes made in varying degrees to both the Roman and the Italic
(and we have begun to harmonize the Bold, which has always been a
major shortcoming with Times New Roman)."
ChangeLog
---------
26 May 2021, STIX Two, version 2.13 b171
Variable and interpolated font bug fixes.
28 April 2021, STIX Two, version 2.13
Variable and interpolated font bug fixes.
26 March 2021, STIX Two, version 2.12
In addition to the changes detailed below, there have been further
updates to the internal font metadata for compatibility with the
Google Fonts platform.
COMPATIBILITY BETWEEN 2.11 AND 2.12
Except as noted below, the font metrics have not changed.
UPDATES TO TEXT FONTS:
* U+00A5 YEN SIGN onum lookup corrected
UPDATES TO STIX TWO MATH:
* Added U+E1F6 (PUA) sans-serif Nabla to PUA sans-serif Greek math
alphabet
* U+2216 SET MINUS embiggened; removed from ss14; added to cv04; also
added ssty and ssty2 variants
* U+2355 APL FUNCTIONAL SYMBOL UP TACK JOT has been turned rightside up
* U+205F MEDIUM MATHEMATICAL SPACE width decreased
* The widths of the following characters have been revised to be more
consistent:
U+003C LESS-THAN SIGN
U+003E GREATER-THAN SIGN
U+00B1 PLUS-MINUS SIGN
U+00D7 MULTIPLICATION SIGN
U+02D4 MODIFIER LETTER UP TACK
U+02D5 MODIFIER LETTER DOWN TACK
U+21D1 UPWARDS DOUBLE ARROW
U+21D3 DOWNWARDS DOUBLE ARROW
U+21D5 UP DOWN DOUBLE ARROW
U+21E7 UPWARDS WHITE ARROW
U+21E9 DOWNWARDS WHITE ARROW
U+21EA UPWARDS WHITE ARROW FROM BAR
U+2208 ELEMENT OF
U+2209 NOT AN ELEMENT OF
U+220B CONTAINS AS MEMBER
U+220C DOES NOT CONTAIN AS MEMBER
U+2213 MINUS-OR-PLUS SIGN
U+2214 DOT PLUS
U+2216 SET MINUS
U+221D PROPORTIONAL TO
U+221F RIGHT ANGLE
U+2220 ANGLE
U+2221 MEASURED ANGLE
U+2222 SPHERICAL ANGLE
U+2237 PROPORTION
U+2238 DOT MINUS
U+2239 EXCESS
U+223A GEOMETRIC PROPORTION
U+223B HOMOTHETIC
U+223C TILDE OPERATOR
U+223D REVERSED TILDE
U+223E INVERTED LAZY S
U+223F SINE WAVE
U+2241 NOT TILDE
U+2242 MINUS TILDE
U+2243 ASYMPTOTICALLY EQUAL TO
U+2244 NOT ASYMPTOTICALLY EQUAL TO
U+2245 APPROXIMATELY EQUAL TO
U+2246 APPROXIMATELY BUT NOT ACTUALLY EQUAL TO
U+2247 NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TO
U+2248 ALMOST EQUAL TO
U+2249 NOT ALMOST EQUAL TO
U+224A ALMOST EQUAL OR EQUAL TO
U+224B TRIPLE TILDE
U+224C ALL EQUAL TO
U+224D EQUIVALENT TO
U+224E GEOMETRICALLY EQUIVALENT TO
U+224F DIFFERENCE BETWEEN
U+2250 APPROACHES THE LIMIT
U+2251 GEOMETRICALLY EQUAL TO
U+2252 APPROXIMATELY EQUAL TO OR THE IMAGE OF
U+2253 IMAGE OF OR APPROXIMATELY EQUAL TO
U+2256 RING IN EQUAL TO
U+2257 RING EQUAL TO
U+2258 CORRESPONDS TO
U+2259 ESTIMATES
U+225A EQUIANGULAR TO
U+225B STAR EQUALS
U+225C DELTA EQUAL TO
U+225D EQUAL TO BY DEFINITION
U+225E MEASURED BY
U+225F QUESTIONED EQUAL TO
U+2260 NOT EQUAL TO
U+2261 IDENTICAL TO
U+2262 NOT IDENTICAL TO
U+2263 STRICTLY EQUIVALENT TO
U+2264 LESS-THAN OR EQUAL TO
U+2265 GREATER-THAN OR EQUAL TO
U+2266 LESS-THAN OVER EQUAL TO
U+2267 GREATER-THAN OVER EQUAL TO
U+2268 LESS-THAN BUT NOT EQUAL TO
U+2269 GREATER-THAN BUT NOT EQUAL TO
U+226D NOT EQUIVALENT TO
U+226E NOT LESS-THAN
U+226F NOT GREATER-THAN
U+2270 NEITHER LESS-THAN NOR EQUAL TO
U+2271 NEITHER GREATER-THAN NOR EQUAL TO
U+2272 LESS-THAN OR EQUIVALENT TO
U+2273 GREATER-THAN OR EQUIVALENT TO
U+2274 NEITHER LESS-THAN NOR EQUIVALENT TO
U+2275 NEITHER GREATER-THAN NOR EQUIVALENT TO
U+2276 LESS-THAN OR GREATER-THAN
U+2277 GREATER-THAN OR LESS-THAN
U+2278 NEITHER LESS-THAN NOR GREATER-THAN
U+2279 NEITHER GREATER-THAN NOR LESS-THAN
U+227A PRECEDES
U+227B SUCCEEDS
U+227C PRECEDES OR EQUAL TO
U+227D SUCCEEDS OR EQUAL TO
U+227E PRECEDES OR EQUIVALENT TO
U+227F SUCCEEDS OR EQUIVALENT TO
U+2280 DOES NOT PRECEDE
U+2281 DOES NOT SUCCEED
U+2282 SUBSET OF
U+2283 SUPERSET OF
U+2284 NOT A SUBSET OF
U+2285 NOT A SUPERSET OF
U+2286 SUBSET OF OR EQUAL TO
U+2287 SUPERSET OF OR EQUAL TO
U+2288 NEITHER A SUBSET OF NOR EQUAL TO
U+2289 NEITHER A SUPERSET OF NOR EQUAL TO
U+228A SUBSET OF WITH NOT EQUAL TO
U+228B SUPERSET OF WITH NOT EQUAL TO
U+228F SQUARE IMAGE OF
U+2290 SQUARE ORIGINAL OF
U+2291 SQUARE IMAGE OF OR EQUAL TO
U+2292 SQUARE ORIGINAL OF OR EQUAL TO
U+22A2 RIGHT TACK
U+22A3 LEFT TACK
U+22A4 DOWN TACK
U+22A5 UP TACK
U+22A8 TRUE
U+22B0 PRECEDES UNDER RELATION
U+22B1 SUCCEEDS UNDER RELATION
U+22B2 NORMAL SUBGROUP OF
U+22B3 CONTAINS AS NORMAL SUBGROUP
U+22B4 NORMAL SUBGROUP OF OR EQUAL TO
U+22B5 CONTAINS AS NORMAL SUBGROUP OR EQUAL TO
U+22B9 HERMITIAN CONJUGATE MATRIX
U+22BE RIGHT ANGLE WITH ARC
U+22C7 DIVISION TIMES
U+22CD REVERSED TILDE EQUALS
U+22D0 DOUBLE SUBSET
U+22D1 DOUBLE SUPERSET
U+22D5 EQUAL AND PARALLEL TO
U+22D6 LESS-THAN WITH DOT
U+22D7 GREATER-THAN WITH DOT
U+22DA LESS-THAN EQUAL TO OR GREATER-THAN
U+22DB GREATER-THAN EQUAL TO OR LESS-THAN
U+22DC EQUAL TO OR LESS-THAN
U+22DD EQUAL TO OR GREATER-THAN
U+22DE EQUAL TO OR PRECEDES
U+22DF EQUAL TO OR SUCCEEDS
U+22E0 DOES NOT PRECEDE OR EQUAL
U+22E1 DOES NOT SUCCEED OR EQUAL
U+22E2 NOT SQUARE IMAGE OF OR EQUAL TO
U+22E3 NOT SQUARE ORIGINAL OF OR EQUAL TO
U+22E4 SQUARE IMAGE OF OR NOT EQUAL TO
U+22E5 SQUARE ORIGINAL OF OR NOT EQUAL TO
U+22E6 LESS-THAN BUT NOT EQUIVALENT TO
U+22E7 GREATER-THAN BUT NOT EQUIVALENT TO
U+22E8 PRECEDES BUT NOT EQUIVALENT TO
U+22E9 SUCCEEDS BUT NOT EQUIVALENT TO
U+22EC NOT NORMAL SUBGROUP OF OR EQUAL TO
U+22ED DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUAL
U+22F3 ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE
U+22F5 ELEMENT OF WITH DOT ABOVE
U+22F6 ELEMENT OF WITH OVERBAR
U+22F8 ELEMENT OF WITH UNDERBAR
U+22F9 ELEMENT OF WITH TWO HORIZONTAL STROKES
U+22FB CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKE
U+22FD CONTAINS WITH OVERBAR
U+231A WATCH
U+2322 FROWN
U+2323 SMILE
U+2660 BLACK SPADE SUIT
U+2661 WHITE HEART SUIT
U+2662 WHITE DIAMOND SUIT
U+2663 BLACK CLUB SUIT
U+2664 WHITE SPADE SUIT
U+2665 BLACK HEART SUIT
U+2666 BLACK DIAMOND SUIT
U+2667 WHITE CLUB SUIT
U+27C0 THREE DIMENSIONAL ANGLE
U+27C3 OPEN SUBSET
U+27C4 OPEN SUPERSET
U+27D3 LOWER RIGHT CORNER WITH DOT
U+27D4 UPPER LEFT CORNER WITH DOT
U+2963 UPWARDS HARPOON WITH BARB LEFT BESIDE UPWARDS HARPOON WITH BARB RIGHT
U+2965 DOWNWARDS HARPOON WITH BARB LEFT BESIDE DOWNWARDS HARPOON WITH BARB RIGHT
U+296E UPWARDS HARPOON WITH BARB LEFT BESIDE DOWNWARDS HARPOON WITH BARB RIGHT
U+296F DOWNWARDS HARPOON WITH BARB LEFT BESIDE UPWARDS HARPOON WITH BARB RIGHT
U+2976 LESS-THAN ABOVE LEFTWARDS ARROW
U+2978 GREATER-THAN ABOVE RIGHTWARDS ARROW
U+2979 SUBSET ABOVE RIGHTWARDS ARROW
U+297B SUPERSET ABOVE LEFTWARDS ARROW
U+297E UP FISH TAIL
U+297F DOWN FISH TAIL
U+2993 LEFT ARC LESS-THAN BRACKET
U+2994 RIGHT ARC GREATER-THAN BRACKET
U+2995 DOUBLE LEFT ARC GREATER-THAN BRACKET
U+2996 DOUBLE RIGHT ARC LESS-THAN BRACKET
U+299B MEASURED ANGLE OPENING LEFT
U+299C RIGHT ANGLE VARIANT WITH SQUARE
U+299D MEASURED RIGHT ANGLE WITH DOT
U+299E ANGLE WITH S INSIDE
U+299F ACUTE ANGLE
U+29A0 SPHERICAL ANGLE OPENING LEFT
U+29A1 SPHERICAL ANGLE OPENING UP
U+29A2 TURNED ANGLE
U+29A3 REVERSED ANGLE
U+29A4 ANGLE WITH UNDERBAR
U+29A5 REVERSED ANGLE WITH UNDERBAR
U+29A8 MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING UP AND RIGHT
U+29A9 MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING UP AND LEFT
U+29AA MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING DOWN AND RIGHT
U+29AB MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING DOWN AND LEFT
U+29E3 EQUALS SIGN AND SLANTED PARALLEL
U+29E4 EQUALS SIGN AND SLANTED PARALLEL WITH TILDE ABOVE
U+29E5 IDENTICAL TO AND SLANTED PARALLEL
U+29FA DOUBLE PLUS
U+29FB TRIPLE PLUS
U+2A22 PLUS SIGN WITH SMALL CIRCLE ABOVE
U+2A23 PLUS SIGN WITH CIRCUMFLEX ACCENT ABOVE
U+2A24 PLUS SIGN WITH TILDE ABOVE
U+2A25 PLUS SIGN WITH DOT BELOW
U+2A26 PLUS SIGN WITH TILDE BELOW
U+2A27 PLUS SIGN WITH SUBSCRIPT TWO
U+2A28 PLUS SIGN WITH BLACK TRIANGLE
U+2A29 MINUS SIGN WITH COMMA ABOVE
U+2A2A MINUS SIGN WITH DOT BELOW
U+2A2B MINUS SIGN WITH FALLING DOTS
U+2A2C MINUS SIGN WITH RISING DOTS
U+2A33 SMASH PRODUCT
U+2A66 EQUALS SIGN WITH DOT BELOW
U+2A67 IDENTICAL WITH DOT ABOVE
U+2A68 TRIPLE HORIZONTAL BAR WITH DOUBLE VERTICAL STROKE
U+2A69 TRIPLE HORIZONTAL BAR WITH TRIPLE VERTICAL STROKE
U+2A6A TILDE OPERATOR WITH DOT ABOVE
U+2A6B TILDE OPERATOR WITH RISING DOTS
U+2A6C SIMILAR MINUS SIMILAR
U+2A6D CONGRUENT WITH DOT ABOVE
U+2A6E EQUALS WITH ASTERISK
U+2A6F ALMOST EQUAL TO WITH CIRCUMFLEX ACCENT
U+2A70 APPROXIMATELY EQUAL OR EQUAL TO
U+2A71 EQUALS SIGN ABOVE PLUS SIGN
U+2A72 PLUS SIGN ABOVE EQUALS SIGN
U+2A73 EQUALS SIGN ABOVE TILDE OPERATOR
U+2A77 EQUALS SIGN WITH TWO DOTS ABOVE AND TWO DOTS BELOW
U+2A78 EQUIVALENT WITH FOUR DOTS ABOVE
U+2A79 LESS-THAN WITH CIRCLE INSIDE
U+2A7A GREATER-THAN WITH CIRCLE INSIDE
U+2A7B LESS-THAN WITH QUESTION MARK ABOVE
U+2A7C GREATER-THAN WITH QUESTION MARK ABOVE
U+2A7D LESS-THAN OR SLANTED EQUAL TO
U+2A7E GREATER-THAN OR SLANTED EQUAL TO
U+2A7F LESS-THAN OR SLANTED EQUAL TO WITH DOT INSIDE
U+2A80 GREATER-THAN OR SLANTED EQUAL TO WITH DOT INSIDE
U+2A81 LESS-THAN OR SLANTED EQUAL TO WITH DOT ABOVE
U+2A82 GREATER-THAN OR SLANTED EQUAL TO WITH DOT ABOVE
U+2A83 LESS-THAN OR SLANTED EQUAL TO WITH DOT ABOVE RIGHT
U+2A84 GREATER-THAN OR SLANTED EQUAL TO WITH DOT ABOVE LEFT
U+2A85 LESS-THAN OR APPROXIMATE
U+2A86 GREATER-THAN OR APPROXIMATE
U+2A87 LESS-THAN AND SINGLE-LINE NOT EQUAL TO
U+2A88 GREATER-THAN AND SINGLE-LINE NOT EQUAL TO
U+2A89 LESS-THAN AND NOT APPROXIMATE
U+2A8A GREATER-THAN AND NOT APPROXIMATE
U+2A8B LESS-THAN ABOVE DOUBLE-LINE EQUAL ABOVE GREATER-THAN
U+2A8C GREATER-THAN ABOVE DOUBLE-LINE EQUAL ABOVE LESS-THAN
U+2A8D LESS-THAN ABOVE SIMILAR OR EQUAL
U+2A8E GREATER-THAN ABOVE SIMILAR OR EQUAL
U+2A8F LESS-THAN ABOVE SIMILAR ABOVE GREATER-THAN
U+2A90 GREATER-THAN ABOVE SIMILAR ABOVE LESS-THAN
U+2A91 LESS-THAN ABOVE GREATER-THAN ABOVE DOUBLE-LINE EQUAL
U+2A92 GREATER-THAN ABOVE LESS-THAN ABOVE DOUBLE-LINE EQUAL
U+2A93 LESS-THAN ABOVE SLANTED EQUAL ABOVE GREATER-THAN ABOVE SLANTED EQUAL
U+2A94 GREATER-THAN ABOVE SLANTED EQUAL ABOVE LESS-THAN ABOVE SLANTED EQUAL
U+2A95 SLANTED EQUAL TO OR LESS-THAN
U+2A96 SLANTED EQUAL TO OR GREATER-THAN
U+2A97 SLANTED EQUAL TO OR LESS-THAN WITH DOT INSIDE
U+2A98 SLANTED EQUAL TO OR GREATER-THAN WITH DOT INSIDE
U+2A99 DOUBLE-LINE EQUAL TO OR LESS-THAN
U+2A9A DOUBLE-LINE EQUAL TO OR GREATER-THAN
U+2A9B DOUBLE-LINE SLANTED EQUAL TO OR LESS-THAN
U+2A9C DOUBLE-LINE SLANTED EQUAL TO OR GREATER-THAN
U+2A9D SIMILAR OR LESS-THAN
U+2A9E SIMILAR OR GREATER-THAN
U+2A9F SIMILAR ABOVE LESS-THAN ABOVE EQUALS SIGN
U+2AA0 SIMILAR ABOVE GREATER-THAN ABOVE EQUALS SIGN
U+2AA1 DOUBLE NESTED LESS-THAN
U+2AA2 DOUBLE NESTED GREATER-THAN
U+2AA6 LESS-THAN CLOSED BY CURVE
U+2AA7 GREATER-THAN CLOSED BY CURVE
U+2AA8 LESS-THAN CLOSED BY CURVE ABOVE SLANTED EQUAL
U+2AA9 GREATER-THAN CLOSED BY CURVE ABOVE SLANTED EQUAL
U+2AAA SMALLER THAN
U+2AAB LARGER THAN
U+2AAC SMALLER THAN OR EQUAL TO
U+2AAD LARGER THAN OR EQUAL TO
U+2AAE EQUALS SIGN WITH BUMPY ABOVE
U+2AAF PRECEDES ABOVE SINGLE-LINE EQUALS SIGN
U+2AB0 SUCCEEDS ABOVE SINGLE-LINE EQUALS SIGN
U+2AB1 PRECEDES ABOVE SINGLE-LINE NOT EQUAL TO
U+2AB2 SUCCEEDS ABOVE SINGLE-LINE NOT EQUAL TO
U+2AB3 PRECEDES ABOVE EQUALS SIGN
U+2AB4 SUCCEEDS ABOVE EQUALS SIGN
U+2AB5 PRECEDES ABOVE NOT EQUAL TO
U+2AB6 SUCCEEDS ABOVE NOT EQUAL TO
U+2AB7 PRECEDES ABOVE ALMOST EQUAL TO
U+2AB8 SUCCEEDS ABOVE ALMOST EQUAL TO
U+2AB9 PRECEDES ABOVE NOT ALMOST EQUAL TO
U+2ABA SUCCEEDS ABOVE NOT ALMOST EQUAL TO
U+2ABD SUBSET WITH DOT
U+2ABE SUPERSET WITH DOT
U+2ABF SUBSET WITH PLUS SIGN BELOW
U+2AC0 SUPERSET WITH PLUS SIGN BELOW
U+2AC1 SUBSET WITH MULTIPLICATION SIGN BELOW
U+2AC2 SUPERSET WITH MULTIPLICATION SIGN BELOW
U+2AC3 SUBSET OF OR EQUAL TO WITH DOT ABOVE
U+2AC4 SUPERSET OF OR EQUAL TO WITH DOT ABOVE
U+2AC5 SUBSET OF ABOVE EQUALS SIGN
U+2AC6 SUPERSET OF ABOVE EQUALS SIGN
U+2AC7 SUBSET OF ABOVE TILDE OPERATOR
U+2AC8 SUPERSET OF ABOVE TILDE OPERATOR
U+2AC9 SUBSET OF ABOVE ALMOST EQUAL TO
U+2ACA SUPERSET OF ABOVE ALMOST EQUAL TO
U+2ACB SUBSET OF ABOVE NOT EQUAL TO
U+2ACC SUPERSET OF ABOVE NOT EQUAL TO
U+2ACF CLOSED SUBSET
U+2AD0 CLOSED SUPERSET
U+2AD1 CLOSED SUBSET OR EQUAL TO
U+2AD2 CLOSED SUPERSET OR EQUAL TO
U+2AD3 SUBSET ABOVE SUPERSET
U+2AD4 SUPERSET ABOVE SUBSET
U+2AD5 SUBSET ABOVE SUBSET
U+2AD6 SUPERSET ABOVE SUPERSET
U+2ADF SHORT DOWN TACK
U+2AE0 SHORT UP TACK
U+2AE1 PERPENDICULAR WITH S
U+2AE2 VERTICAL BAR TRIPLE RIGHT TURNSTILE
U+2AE4 VERTICAL BAR DOUBLE LEFT TURNSTILE
U+2AE6 LONG DASH FROM LEFT MEMBER OF DOUBLE VERTICAL
U+2AE7 SHORT DOWN TACK WITH OVERBAR
U+2AE8 SHORT UP TACK WITH UNDERBAR
U+2AE9 SHORT UP TACK ABOVE SHORT DOWN TACK
U+2AEA DOUBLE DOWN TACK
U+2AEB DOUBLE UP TACK
U+2AF3 PARALLEL WITH TILDE OPERATOR
U+2AF4 TRIPLE VERTICAL BAR BINARY RELATION
U+2AF5 TRIPLE VERTICAL BAR WITH HORIZONTAL STROKE
U+2AF6 TRIPLE COLON OPERATOR
U+2AF9 DOUBLE-LINE SLANTED LESS-THAN OR EQUAL TO
U+2AFA DOUBLE-LINE SLANTED GREATER-THAN OR EQUAL TO
U+3012 POSTAL MARK
This also applies to the following characters in the Private Use Area:
U+E00A U+E00B U+E00E U+E00F U+E010 U+E011 U+E016 U+E018 U+E01E
U+E023 U+E025 U+E026 U+E027 U+E02F U+E037 U+E039 U+E03B U+E03C
U+E040 U+E043 U+E044 U+E045 U+E046 U+E04B U+E04C U+E04D U+E04E
U+E04F U+E050 U+E051 U+E052 U+E059 U+E05A U+E05B U+E05C U+E06D
U+E06E U+E06F U+E070 U+E075 U+E076 U+E077 U+E07C U+E07D U+E07E
U+E07F U+E080 U+E081 U+E082 U+E083 U+E084 U+E085 U+E086 U+E087
U+E088 U+E089 U+E092 U+E093 U+E094 U+E095 U+E096 U+E097 U+E098
U+E0BB U+E0BC U+E0E9 U+E0EC U+E14E U+E14F U+E28E U+E3C2 U+E3C3
U+E3C4
-----------------------------------
13 January 2021, STIX Two, version 2.11
* Changed "Semibold" to "SemiBold" in all font and file names.
* Fixed various technical issues required for compatibility with the
Google Fonts platform. There were no changes to font metrics or
glyph shapes.
-----------------------------------
18 December 2020, STIX Two, version 2.10
For compatibility with the internal major/minor versioning convention
used by the OpenType font format, the public version number was
switched from the three-part semantic versioning convention to a
two-part number.
All non-variable fonts are now available in both OTF and TTF formats.
The WOFF format is no longer distributed.
COMPATIBILITY BETWEEN 2.0.2 AND 2.10
There have been extensive changes to both glyph shapes and font
metrics in this release. These could affect the layout of documents
prepared with previous versions of these fonts.
UPDATES TO MATH AND TEXT FONTS
The following changes apply to both the text and math fonts:
* Removed the Macintosh platform entries from the name table as they
are now considered obsolete.
* Completed U+2100..214F Letterlike Symbols by adding
U+2100 ACCOUNT OF
U+2101 ADDRESSED TO THE SUBJECT
U+2103 DEGREE CELSIUS
U+2104 CENTRE LINE SYMBOL
U+2106 CADA UNA
U+2108 SCRUPLE
U+2109 DEGREE FAHRENHEIT
U+2114 L B BAR SYMBOL
U+211F RESPONSE
U+2120 SERVICE MARK
U+2121 TELEPHONE SIGN
U+2123 VERSICLE
U+212A KELVIN SIGN
U+2139 INFORMATION SOURCE
U+213A ROTATED CAPITAL Q
U+213B ROTATED CAPITAL Q
U+214C PER SIGN
U+214D AKTIESELSKAB
U+214E TURNED SMALL F
U+214F SYMBOL FOR SAMARITAN SOURCE
* Extended U+2000..206F General Punctuation by adding
U+2000 EN QUAD
U+2001 EM QUAD
U+2002 EN SPACE
U+2003 EM SPACE
U+2004 THREE-PER-EM SPACE
U+2005 FOUR-PER-EM SPACE
U+2006 SIX-PER-EM SPACE
U+2007 FIGURE SPACE
U+2008 PUNCTUATION SPACE
U+2009 THIN SPACE
U+200A HAIR SPACE
U+200B ZERO WIDTH SPACE
U+200C ZERO WIDTH NON-JOINER
U+200D ZERO WIDTH JOINER
U+202F NARROW NO-BREAK SPACE
In addition, U+2026 HORIZONTAL ELLIPSIS was redrawn.
UPDATES TO TEXT FONTS
* 2.10 includes OpenType variable font builds for the Text fonts
(STIXTwoTextVF-Roman.ttf and STIXTwoTextVF-Italic.ttf). For more
information about variable fonts see:
https://medium.com/variable-fonts/https-medium-com-tiro-introducing-opentype-variable-fonts-12ba6cd2369
The STIX Two Text variable fonts support a weight interpolation axis
between the regular and bold weights, with named instances for
medium and semibold. New static fonts for these instances are
derived from the variable fonts. Development of the variable fonts
was funded by Google Fonts.
* New static weights: Medium and Semibold
* Add anchor mark-to-base and mark-to-mark positioning for Unicode
combining mark characters, to provide positioning for arbitrary
diacritic marks
UPDATES TO MATH FONT
* Added lowercase chancery script set to correspond to new default
uppercase script style (U+1D4B6..1D4CF, U+212F, U+U+210A, U+2134).
Mapped existing roundhand glyphs to Stylistic Set 1 (ss01).
* Added bold chancery script characters (U+1D4D0..U+1D503), also
activated by Stylistic Set 1 (ss01).
* Refined/replaced existing roundhand script style variant glyphs,
presuming that these may be preferred by some users to the new
chancery default.
* Extended set of 'ssty' super- and subscript scaling variants.
* Restored STIX 1 Italic Double Struck mathematical alphabet (PUA
U+E154..E17B, U+E1B4..E1BB).
* Restored STIX 1 Greek Sans Serif Italic mathematical alphabet (PUA
U+E1BE..E1F5).
* Completed U+2300..U+23FF Unicode Miscellaneous Technical by adding
U+2301 ELECTRIC ARROW
U+2303 UP ARROWHEAD
U+2304 DOWN ARROWHEAD
U+2307 WAVY LINE
U+2314 SECTOR
U+231B HOURGLASS
U+2324 UP ARROWHEAD BETWEEN TWO HORIZONTAL BARS
U+2325 OPTION KEY
U+2326 ERASE TO THE RIGHT
U+2327 X IN A RECTANGLE BOX
U+2328 KEYBOARD
U+232B ERASE TO THE LEFT
U+232F SYMMETRY
U+2330 TOTAL RUNOUT
U+2331 DIMENSION ORIGIN
U+2333 SLOPE
U+2334 COUNTERBORE
U+2335 COUNTERSINK
U+233B APL FUNCTIONAL SYMBOL QUAD JOT
U+233C APL FUNCTIONAL SYMBOL QUAD CIRCLE
U+2343 APL FUNCTIONAL SYMBOL QUAD LESS-THAN
U+2344 APL FUNCTIONAL SYMBOL QUAD GREATER-THAN
U+2345 APL FUNCTIONAL SYMBOL LEFTWARDS VANE
U+2346 APL FUNCTIONAL SYMBOL RIGHTWARDS VANE
U+234A APL FUNCTIONAL SYMBOL DOWN TACK UNDERBAR
U+234C APL FUNCTIONAL SYMBOL QUAD DOWN CARET
U+234D APL FUNCTIONAL SYMBOL QUAD DELTA
U+234F APL FUNCTIONAL SYMBOL UPWARDS VANE
U+2351 APL FUNCTIONAL SYMBOL UP TACK OVERBAR
U+2354 APL FUNCTIONAL SYMBOL QUAD DEL
U+2356 APL FUNCTIONAL SYMBOL DOWNWARDS VANE
U+2358 APL FUNCTIONAL SYMBOL QUOTE UNDERBAR
U+235A APL FUNCTIONAL SYMBOL DIAMOND UNDERBAR
U+235B APL FUNCTIONAL SYMBOL JOT UNDERBAR
U+235C APL FUNCTIONAL SYMBOL CIRCLE UNDERBAR
U+2361 APL FUNCTIONAL SYMBOL UP TACK DIAERESIS
U+2362 APL FUNCTIONAL SYMBOL DEL DIAERESIS
U+2367 APL FUNCTIONAL SYMBOL LEFT SHOE STILE
U+2369 APL FUNCTIONAL SYMBOL GREATER-THAN DIAERESIS
U+236E APL FUNCTIONAL SYMBOL SEMICOLON UNDERBAR
U+236F APL FUNCTIONAL SYMBOL QUAD NOT EQUAL
U+2376 APL FUNCTIONAL SYMBOL ALPHA UNDERBAR
U+2379 APL FUNCTIONAL SYMBOL OMEGA UNDERBAR
U+237B NOT CHECK MARK
U+237D SHOULDERED OPEN BOX
U+237E BELL SYMBOL
U+237F VERTICAL LINE WITH MIDDLE DOT
U+2380 INSERTION SYMBOL
U+2381 CONTINUOUS UNDERLINE SYMBOL
U+2382 DISCONTINUOUS UNDERLINE SYMBOL
U+2383 EMPHASIS SYMBOL
U+2384 COMPOSITION SYMBOL
U+2385 WHITE SQUARE WITH CENTRE VERTICAL LINE
U+2386 ENTER SYMBOL
U+2387 ALTERNATIVE KEY SYMBOL
U+2388 HELM SYMBOL
U+2389 CIRCLED HORIZONTAL BAR WITH NOTCH
U+238A CIRCLED TRIANGLE DOWN
U+238B BROKEN CIRCLE WITH NORTHWEST ARROW
U+238C UNDO SYMBOL
U+238D MONOSTABLE SYMBOL
U+238E HYSTERESIS SYMBOL
U+238F OPEN-CIRCUIT-OUTPUT H-TYPE SYMBOL
U+2390 OPEN-CIRCUIT-OUTPUT L-TYPE SYMBOL
U+2391 PASSIVE-PULL-DOWN-OUTPUT SYMBOL
U+2392 PASSIVE-PULL-UP-OUTPUT SYMBOL
U+2396 DECIMAL SEPARATOR KEY SYMBOL
U+2397 PREVIOUS PAGE
U+2398 NEXT PAGE
U+2399 PRINT SCREEN SYMBOL
U+239A CLEAR SCREEN SYMBOL
U+23BA HORIZONTAL SCAN LINE-1
U+23BB HORIZONTAL SCAN LINE-3
U+23BC HORIZONTAL SCAN LINE-7
U+23BD HORIZONTAL SCAN LINE-9
U+23BE DENTISTRY SYMBOL LIGHT VERTICAL AND TOP RIGHT
U+23BF DENTISTRY SYMBOL LIGHT VERTICAL AND BOTTOM RIGHT
U+23C0 DENTISTRY SYMBOL LIGHT VERTICAL WITH CIRCLE
U+23C1 DENTISTRY SYMBOL LIGHT DOWN AND HORIZONTAL WITH CIRCLE
U+23C2 DENTISTRY SYMBOL LIGHT UP AND HORIZONTAL WITH CIRCLE
U+23C3 DENTISTRY SYMBOL LIGHT VERTICAL WITH TRIANGLE
U+23C4 DENTISTRY SYMBOL LIGHT DOWN AND HORIZONTAL WITH TRIANGLE
U+23C5 DENTISTRY SYMBOL LIGHT UP AND HORIZONTAL WITH TRIANGLE
U+23C6 DENTISTRY SYMBOL LIGHT VERTICAL AND WAVE
U+23C7 DENTISTRY SYMBOL LIGHT DOWN AND HORIZONTAL WITH WAVE
U+23C8 DENTISTRY SYMBOL LIGHT UP AND HORIZONTAL WITH WAVE
U+23C9 DENTISTRY SYMBOL LIGHT DOWN AND HORIZONTAL
U+23CA DENTISTRY SYMBOL LIGHT UP AND HORIZONTAL
U+23CB DENTISTRY SYMBOL LIGHT VERTICAL AND TOP LEFT
U+23CC DENTISTRY SYMBOL LIGHT VERTICAL AND BOTTOM LEFT
U+23CD SQUARE FOOT
U+23CF EJECT SYMBOL
U+23D1 METRICAL BREVE
U+23D2 METRICAL LONG OVER SHORT
U+23D3 METRICAL SHORT OVER LONG
U+23D4 METRICAL LONG OVER TWO SHORTS
U+23D5 METRICAL TWO SHORTS OVER LONG
U+23D6 METRICAL TWO SHORTS JOINED
U+23D7 METRICAL TRISEME
U+23D8 METRICAL TETRASEME
U+23D9 METRICAL PENTASEME
U+23DA EARTH GROUND
U+23DB FUSE
U+23E8 DECIMAL EXPONENT SYMBOL
U+23E9 BLACK RIGHT-POINTING DOUBLE TRIANGLE
U+23EA BLACK LEFT-POINTING DOUBLE TRIANGLE
U+23EB BLACK UP-POINTING DOUBLE TRIANGLE
U+23EC BLACK DOWN-POINTING DOUBLE TRIANGLE
U+23ED BLACK RIGHT-POINTING DOUBLE TRIANGLE WITH VERTICAL BAR
U+23EE BLACK LEFT-POINTING DOUBLE TRIANGLE WITH VERTICAL BAR
U+23EF BLACK RIGHT-POINTING TRIANGLE WITH DOUBLE VERTICAL BAR
U+23F0 ALARM CLOCK
U+23F1 STOPWATCH
U+23F2 TIMER CLOCK
U+23F3 HOURGLASS WITH FLOWING SAND
U+23F4 BLACK MEDIUM LEFT-POINTING TRIANGLE
U+23F5 BLACK MEDIUM RIGHT-POINTING TRIANGLE
U+23F6 BLACK MEDIUM UP-POINTING TRIANGLE
U+23F7 BLACK MEDIUM DOWN-POINTING TRIANGLE
U+23F8 DOUBLE VERTICAL BAR
U+23F9 BLACK SQUARE FOR STOP
U+23FA BLACK CIRCLE FOR RECORD
U+23FB POWER SYMBOL
U+23FC POWER ON-OFF SYMBOL
U+23FD POWER ON SYMBOL
U+23FE POWER SLEEP SYMBOL
U+23FF OBSERVER EYE SYMBOL
* Completed U+2600..U+26FF Unicode Miscellaneous Symbols by adding
U+2600 BLACK SUN WITH RAYS
U+2601 CLOUD
U+2602 UMBRELLA
U+2603 SNOWMAN
U+2604 COMET
U+2607 LIGHTNING
U+2608 THUNDERSTORM
U+260A ASCENDING NODE
U+260B DESCENDING NODE
U+260D OPPOSITION
U+260F WHITE TELEPHONE
U+2610 BALLOT BOX
U+2611 BALLOT BOX WITH CHECK
U+2613 SALTIRE
U+2614 UMBRELLA WITH RAIN DROPS
U+2615 HOT BEVERAGE
U+2616 WHITE SHOGI PIECE
U+2617 BLACK SHOGI PIECE
U+2618 SHAMROCK
U+2619 REVERSED ROTATED FLORAL HEART BULLET
U+261A BLACK LEFT POINTING INDEX
U+261B BLACK RIGHT POINTING INDEX
U+261C WHITE LEFT POINTING INDEX
U+261D WHITE UP POINTING INDEX
U+261E WHITE RIGHT POINTING INDEX
U+261F WHITE DOWN POINTING INDEX
U+2620 SKULL AND CROSSBONES
U+2622 RADIOACTIVE SIGN
U+2623 BIOHAZARD SIGN
U+2624 CADUCEUS
U+2625 ANKH
U+2626 ORTHODOX CROSS
U+2627 CHI RHO
U+2628 CROSS OF LORRAINE
U+2629 CROSS OF JERUSALEM
U+262A STAR AND CRESCENT
U+262B FARSI SYMBOL
U+262C ADI SHAKTI
U+262D HAMMER AND SICKLE
U+262E PEACE SYMBOL
U+262F YIN YANG
U+2630 TRIGRAM FOR HEAVEN
U+2631 TRIGRAM FOR LAKE
U+2632 TRIGRAM FOR FIRE
U+2633 TRIGRAM FOR THUNDER
U+2634 TRIGRAM FOR WIND
U+2635 TRIGRAM FOR WATER
U+2636 TRIGRAM FOR MOUNTAIN
U+2637 TRIGRAM FOR EARTH
U+2638 WHEEL OF DHARMA
U+2645 URANUS
U+264A GEMINI
U+264B CANCER
U+264C LEO
U+264D VIRGO
U+264E LIBRA
U+264F SCORPIUS
U+2650 SAGITTARIUS
U+2651 CAPRICORN
U+2652 AQUARIUS
U+2653 PISCES
U+2654 WHITE CHESS KING
U+2655 WHITE CHESS QUEEN
U+2656 WHITE CHESS ROOK
U+2657 WHITE CHESS BISHOP
U+2658 WHITE CHESS KNIGHT
U+2659 WHITE CHESS PAWN
U+265A BLACK CHESS KING
U+265B BLACK CHESS QUEEN
U+265C BLACK CHESS ROOK
U+265D BLACK CHESS BISHOP
U+265E BLACK CHESS KNIGHT
U+265F BLACK CHESS PAWN
U+2668 HOT SPRINGS
U+266C BEAMED SIXTEENTH NOTES
U+2670 WEST SYRIAC CROSS
U+2671 EAST SYRIAC CROSS
U+2672 UNIVERSAL RECYCLING SYMBOL
U+2673 RECYCLING SYMBOL FOR TYPE-1 PLASTICS
U+2674 RECYCLING SYMBOL FOR TYPE-2 PLASTICS
U+2675 RECYCLING SYMBOL FOR TYPE-3 PLASTICS
U+2676 RECYCLING SYMBOL FOR TYPE-4 PLASTICS
U+2677 RECYCLING SYMBOL FOR TYPE-5 PLASTICS
U+2678 RECYCLING SYMBOL FOR TYPE-6 PLASTICS
U+2679 RECYCLING SYMBOL FOR TYPE-7 PLASTICS
U+267A RECYCLING SYMBOL FOR GENERIC MATERIALS
U+267B BLACK UNIVERSAL RECYCLING SYMBOL
U+267C RECYCLED PAPER SYMBOL
U+267D PARTIALLY-RECYCLED PAPER SYMBOL
U+267F WHEELCHAIR SYMBOL
U+268A MONOGRAM FOR YANG
U+268B MONOGRAM FOR YIN
U+268C DIGRAM FOR GREATER YANG
U+268D DIGRAM FOR LESSER YIN
U+268E DIGRAM FOR LESSER YANG
U+268F DIGRAM FOR GREATER YIN
U+2690 WHITE FLAG
U+2691 BLACK FLAG
U+2692 HAMMER AND PICK
U+2693 ANCHOR
U+2694 CROSSED SWORDS
U+2695 STAFF OF AESCULAPIUS
U+2696 SCALES
U+2697 ALEMBIC
U+2698 FLOWER
U+2699 GEAR
U+269A STAFF OF HERMES
U+269B ATOM SYMBOL
U+269C FLEUR-DE-LIS
U+269D OUTLINED WHITE STAR
U+269E THREE LINES CONVERGING RIGHT
U+269F THREE LINES CONVERGING LEFT
U+26A1 HIGH VOLTAGE SIGN
U+26A2 DOUBLED FEMALE SIGN
U+26A3 DOUBLED MALE SIGN
U+26A4 INTERLOCKED FEMALE AND MALE SIGN
U+26A6 MALE WITH STROKE SIGN
U+26A7 MALE WITH STROKE AND MALE AND FEMALE SIGN
U+26A8 VERTICAL MALE WITH STROKE SIGN
U+26A9 HORIZONTAL MALE WITH STROKE SIGN
U+26AD MARRIAGE SYMBOL
U+26AE DIVORCE SYMBOL
U+26AF UNMARRIED PARTNERSHIP SYMBOL
U+26B0 COFFIN
U+26B1 FUNERAL URN
U+26B3 CERES
U+26B4 PALLAS
U+26B5 JUNO
U+26B6 VESTA
U+26B7 CHIRON
U+26B8 BLACK MOON LILITH
U+26B9 SEXTILE
U+26BA SEMISEXTILE
U+26BB QUINCUNX
U+26BC SESQUIQUADRATE
U+26BD SOCCER BALL
U+26BE BASEBALL
U+26BF SQUARED KEY
U+26C0 WHITE DRAUGHTS MAN
U+26C1 WHITE DRAUGHTS KING
U+26C2 BLACK DRAUGHTS MAN
U+26C3 BLACK DRAUGHTS KING
U+26C4 SNOWMAN WITHOUT SNOW
U+26C5 SUN BEHIND CLOUD
U+26C6 RAIN
U+26C7 BLACK SNOWMAN
U+26C8 THUNDER CLOUD AND RAIN
U+26C9 TURNED WHITE SHOGI PIECE
U+26CA TURNED BLACK SHOGI PIECE
U+26CB WHITE DIAMOND IN SQUARE
U+26CC CROSSING LANES
U+26CD DISABLED CAR
U+26CE OPHIUCHUS
U+26CF PICK
U+26D0 CAR SLIDING
U+26D1 HELMET WITH WHITE CROSS
U+26D2 CIRCLED CROSSING LANES
U+26D3 CHAINS
U+26D4 NO ENTRY
U+26D5 ALTERNATE ONE-WAY LEFT WAY TRAFFIC
U+26D6 BLACK TWO-WAY LEFT WAY TRAFFIC
U+26D7 WHITE TWO-WAY LEFT WAY TRAFFIC
U+26D8 BLACK LEFT LANE MERGE
U+26D9 WHITE LEFT LANE MERGE
U+26DA DRIVE SLOW SIGN
U+26DB HEAVY WHITE DOWN-POINTING TRIANGLE
U+26DC LEFT CLOSED ENTRY
U+26DD SQUARED SALTIRE
U+26DE FALLING DIAGONAL IN WHITE CIRCLE IN BLACK SQUARE
U+26DF BLACK TRUCK
U+26E0 RESTRICTED LEFT ENTRY-1
U+26E1 RESTRICTED LEFT ENTRY-2
U+26E3 HEAVY CIRCLE WITH STROKE AND TWO DOTS ABOVE
U+26E4 PENTAGRAM
U+26E5 RIGHT-HANDED INTERLACED PENTAGRAM
U+26E6 LEFT-HANDED INTERLACED PENTAGRAM
U+26E7 INVERTED PENTAGRAM
U+26E8 BLACK CROSS ON SHIELD
U+26E9 SHINTO SHRINE
U+26EA CHURCH
U+26EB CASTLE
U+26EC HISTORIC SITE
U+26ED GEAR WITHOUT HUB
U+26EE GEAR WITH HANDLES
U+26EF MAP SYMBOL FOR LIGHTHOUSE
U+26F0 MOUNTAIN
U+26F1 UMBRELLA ON GROUND
U+26F2 FOUNTAIN
U+26F3 FLAG IN HOLE
U+26F4 FERRY
U+26F5 SAILBOAT
U+26F6 SQUARE FOUR CORNERS
U+26F7 SKIER
U+26F8 ICE SKATE
U+26F9 PERSON WITH BALL
U+26FA TENT
U+26FB JAPANESE BANK SYMBOL
U+26FC HEADSTONE GRAVEYARD SYMBOL
U+26FD FUEL PUMP
U+26FE CUP ON BLACK SQUARE
U+26FF WHITE FLAG WITH HORIZONTAL MIDDLE BLACK STRIPE
* The following characters have been revised. Sometimes noly the
spacing has been adjusted, but most often the outline has also been
modified.
U+003B U+007C U+00AC U+00F7 U+2016 U+204F U+2105 U+210B U+210C
U+2110..U+2113 U+2115 U+2119 U+211B U+211C U+211E U+2126..U+2128
U+212C U+212D U+212F U+2130 U+2131 U+2133 U+2134 U+2145..U+2149
U+2208 U+2209 U+220B U+220C U+2217 U+2227..U+222A U+2282..U+228E
U+22A2..U+22A5 U+22C6 U+22D0 U+22D1 U+22EF U+22F2 U+22F3 U+22F5
U+22F6 U+22F8..U+22FB U+22FD U+2669..U+266B U+266D..U+266F
U+1D400..U1D433 U+1D504..1D537 U+1D541 U+1D558 U+1D55B
U+1D55D..1D562 U+1D565 U+1D566
-----------------------------------
18 June 2019, STIX Two, version 2.0.2
This release fixes a glitch in the OS/2 tables: Bit 8 (WWS) of the
fsSelection field has been set and the OS/2 table version has been
updated to 4. No changes were made to any glyphs or metrics.
-----------------------------------
15 April 2019, STIX Two, version 2.0.1
COMPATIBILITY BETWEEN 2.0.1 AND 2.0.0
There have been numerous improvements to the design of individual
glyphs and to the placement of various accents. Since these don't
affect character metrics, they should not affect the layout of
documents that used v2.0.0 of the fonts.
Users upgrading existing documents from 2.0.0 to 2.0.1 should be aware
of the following potential incompatibilities:
* Character metrics for some glyphs, especially Mathematical
Alphanumeric Symbols and APL functional symbols, have changed.
* Kerning between z and following punctuation has been improved.
* In STIX2Math, Stylistic Set 7 (ss07) no longer includes U+2205
* U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD PARTIAL
DIFFERENTIAL are now upright by default.
See below for further details.
TEXT FONTS
* Added U+2423 OPEN BOX to all faces.
* Added Stylistic Set ss02 to select upright parentheses, brackets,
and braces in Italic and BoldItalic faces.
* Harmonized design of smallcap U+02A9 LATIN SMALL LETTER FENG DIGRAPH
between Regular and Bold faces.
* Improved design of extended Latin and IPA character glyphs.
* Improved kerning of selected character pairs.
* Improved design and placement of U+0307 COMBINING DOT ABOVE and
U+0308 COMBINING DIAERESIS.
MATH FONTS
* The following Mathematical Alphanumeric Symbols have been improved.
Note that in some case this has necessitated changes to the
character metrics.
U+1D504..1D537 Fraktur symbols
U+1D538..1D56B Double-struck symbols
U+1D56C..1D59F Bold Fraktur symbols
U+1D5A0..1D5D3 Sans-serif symbols [SSP]
U+1D5D4..1D607 Sans-serif bold symbols [SSP]
U+1D608..1D63B Sans-serif italic symbols [SSP]
U+1D63C..1D66F Sans-serif bold italic symbols [SSP]
U+1D670..1D6A3 Monospace symbols
U+1D756..1D78F Sans-serif bold Greek
U+1D790..1D7C9 Sans-serif bold italic Greek
U+1D7D8..1D7E1 Double-struck digits
U+1D7E2..1D7EB Sans-serif digits [SSP]
U+1D7EC..1D7F5 Sans-serif bold digits [SSP]
U+1D7F6..1D7FF Monospace digits
Note: The ranges marked "[SSP]" are derived from the Source Sans Pro
fonts, with proportions and weight modified to harmonize with the
STIX design.
* Added support for Unicode Standard Mathematical Standardized Variants.
* Removed variant form of U+2205 EMPTY SET from Stylistic Set 7 to
Character Variant 3. NOTE: For most users, the "variant" form will
be the preferred shape, but the default shape has been left as-is
for backwards compatibility.
* Improved proportions of existing APL symbols and added an additional
16 symbols (see below).
* Corrected glyph for U+1D752 MATHEMATICAL BOLD ITALIC KAPPA SYMBOL.
* Improved positioning of tilde math accent.
* Added dotless variants of U+2148 DOUBLE-STRUCK ITALIC SMALL I and
U_2149 DOUBLE-STRUCK ITALIC SMALL J.
* Made U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD
PARTIAL DIFFERENTIAL upright rather than italic.
* Revised and extended coverage of Enclosed Alphanumeric block
(U+2460-24FF).
* U+20E1 COMBINING LEFT RIGHT ARROW ABOVE is now extensible.
* Corrected vertical placement of U+00B1 PLUS-MINUS SIGN
* The following delimiters now have a full set of 12 growing form
variants.
U+2308 LEFT CEILING
U+2309 RIGHT CEILING
U+230A LEFT FLOOR
U+230B RIGHT FLOOR
U+2772 LIGHT LEFT TORTOISE SHELL BRACKET ORNAMENT
U+2773 LIGHT RIGHT TORTOISE SHELL BRACKET ORNAMENT
U+27E6 LEFT WHITE SQUARE BRACKET
U+27E7 MATHEMATICAL RIGHT WHITE SQUARE BRACKET
U+27E8 MATHEMATICAL LEFT ANGLE BRACKET
U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET
U+27EA MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
U+27EB MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
U+2983 WHITE CURLY BRACKET
U+2984 RIGHT WHITE CURLY BRACKET
U+2985 LEFT WHITE PARENTHESIS
U+2986 RIGHT WHITE PARENTHESIS
* New characters
General Punctuation
U+2061 FUNCTION APPLICATION
U+2062 INVISIBLE TIMES
U+2063 INVISIBLE SEPARATOR
U+2064 INVISIBLE PLUS
Miscellaneous Technical
U+2338 APL FUNCTIONAL SYMBOL QUAD EQUAL
U+233A APL FUNCTIONAL SYMBOL QUAD DIAMOND
U+233E APL FUNCTIONAL SYMBOL CIRCLE JOT
U+2341 APL FUNCTIONAL SYMBOL QUAD SLASH
U+2342 APL FUNCTIONAL SYMBOL QUAD BACKSLASH
U+2347 APL FUNCTIONAL SYMBOL QUAD LEFTWARDS ARROW
U+2348 APL FUNCTIONAL SYMBOL QUAD RIGHTWARDS ARROW
U+2350 APL FUNCTIONAL SYMBOL QUAD UPWARDS ARROW
U+2357 APL FUNCTIONAL SYMBOL QUAD DOWNWARDS ARROW
U+2360 APL FUNCTIONAL SYMBOL QUAD COLON
U+2364 APL FUNCTIONAL SYMBOL JOT DIAERESIS
U+2365 APL FUNCTIONAL SYMBOL CIRCLE DIAERESIS
U+2366 APL FUNCTIONAL SYMBOL DOWN SHOE STILE
U+236D APL FUNCTIONAL SYMBOL STILE TILDE
U+2378 APL FUNCTIONAL SYMBOL IOTA UNDERBAR
U+2395 APL FUNCTIONAL SYMBOL QUAD
U+23B7 RADICAL SYMBOL BOTTOM
U+23B8 LEFT VERTICAL BOX LINE
U+23B9 RIGHT VERTICAL BOX LINE
Control Pictures
U+2422 BLANK SYMBOL
Enclosed Alphanumerics
U+2469..24B5
U+24EB..24FF
Dingbats
U+2776 DINGBAT NEGATIVE CIRCLED DIGIT ONE
U+2777 DINGBAT NEGATIVE CIRCLED DIGIT TWO
U+2778 DINGBAT NEGATIVE CIRCLED DIGIT THREE
U+2779 DINGBAT NEGATIVE CIRCLED DIGIT FOUR
U+277A DINGBAT NEGATIVE CIRCLED DIGIT FIVE
U+277B DINGBAT NEGATIVE CIRCLED DIGIT SIX
U+277C DINGBAT NEGATIVE CIRCLED DIGIT SEVEN
U+277D DINGBAT NEGATIVE CIRCLED DIGIT EIGHT
U+277E DINGBAT NEGATIVE CIRCLED DIGIT NINE
U+277F DINGBAT NEGATIVE CIRCLED NUMBER TEN
Arabic Mathematical Alphabetic Symbols
U+1EEF0 ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL
U+1EEF1 ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
Note: These two characters were added for compatibility with
the LaTeX unicode-math package. There are no plans to include
further support for Arabic typesetting.
1 December 2016, STIX Two, version 2.0.0
In addition to the overall visual redesign, STIX Two incorporates a
number of significant improvements and additions over version 1 of the
fonts. Special attention has been given to implementing accepted best
practices for OpenType fonts, such as the use of font features to
access variant glyph shapes that were previously only available via
the Unicode Private Use Areas.
The letterspacing and kerning of the text fonts have been
significantly improved.
True small capital variants (Latin, Cyrillic, and Greek), accessible
via the OpenType font feature smcp, have been added for all text
fonts.
Text (lowercase or oldstyle) numerals, available via the font features
pnum and onum, have been added, in addition to natural-spacing
figures.
Alphabetic superscripts and numeric sub- and superscripts, accessible
via the subs and sups font features, have been added.
Fractions are available via the frac feature, as well as numerators
(numr) and denominators (dnom).
The OpenType MATH table has been completely rewritten and extended.
Additions have been made to these Unicode blocks:
Latin-1 Supplement U+0080 - U+00FF
Latin Extended-A U+0100 - U+017F
Latin Extended Additional U+0180 - U+024F
Cyrillic U+0400 - U+04FF
Greek and Coptic U+0370 - U+03FF
IPA blocks U+0250 - U+02AF
BACKWARDS COMPATIBILITY
Because of the scope of the changes, especially to the text fonts,
STIX Two is not a drop-in replacement for earlier versions. While we
understand and sympathize with the difficulties caused by the
incompatibilities we have introduced, we nevertheless felt they were
necessary to address some of the shortcomings of earlier versions of
the fonts and to position us to respond to the needs of modern
publishing.
Earlier versions of the STIX fonts are deprecated and no longer
supported. We urge all users of the STIX fonts to upgrade to the new
versions as soon as possible.
To enable the new and old versions of the fonts to coexist during the
transition phase, the fonts have been renamed as follows:
STIX 1.1.0 STIX 2.0.0
STIX-Regular STIX Two Text
STIX-Italic STIX Two Text Italic
STIX-Bold STIX Two Text Bold
STIX-BoldItalic STIX Two Text Bold Italic
STIX Math Regular STIX Two Math
The four text fonts contain glyphs from Unicode text blocks only. For
example, all characters from the range U+2190 to U+3063 and U+E000 to
U+E368 and all plane 1 characters have been removed from the text
fonts and are now found only in STIX Two Math. Whenever possible,
characters have been removed from the Private Use Area (U+E000-U+F8FF)
and made available via font features instead.
The STIX-General packaging of the fonts is no longer supported.
Acknowledgements
----------------
Tiro Typeworks Ltd.
https://www.tiro.com
OFL-FAQ
OFL FAQ - Frequently Asked Questions about the SIL Open Font License (OFL)
Version 1.1-update5 - April 2017
The OFL FAQ is copyright (c) 2005-2017 SIL International.
(See http://scripts.sil.org/OFL for updates)
CONTENTS OF THIS FAQ
1 USING AND DISTRIBUTING FONTS LICENSED UNDER THE OFL
2 USING OFL FONTS FOR WEB PAGES AND ONLINE WEB FONT SERVICES
3 MODIFYING OFL-LICENSED FONTS
4 LICENSING YOUR ORIGINAL FONTS UNDER THE OFL
5 CHOOSING RESERVED FONT NAMES
6 ABOUT THE FONTLOG
7 MAKING CONTRIBUTIONS TO OFL PROJECTS
8 ABOUT THE LICENSE ITSELF
9 ABOUT SIL INTERNATIONAL
APPENDIX A - FONTLOG EXAMPLE
1 USING AND DISTRIBUTING FONTS LICENSED UNDER THE OFL
1.1 Can I use the fonts for a book or other print publication, to create logos or other graphics or even to manufacture objects based on their outlines?
Yes. You are very welcome to do so. Authors of fonts released under the OFL allow you to use their font software as such for any kind of design work. No additional license or permission is required, unlike with some other licenses. Some examples of these uses are: logos, posters, business cards, stationery, video titling, signage, t-shirts, personalised fabric, 3D-printed/laser-cut shapes, sculptures, rubber stamps, cookie cutters and lead type.
1.1.1 Does that restrict the license or distribution of that artwork?
No. You remain the author and copyright holder of that newly derived graphic or object. You are simply using an open font in the design process. It is only when you redistribute, bundle or modify the font itself that other conditions of the license have to be respected (see below for more details).
1.1.2 Is any kind of acknowledgement required?
No. Font authors may appreciate being mentioned in your artwork's acknowledgements alongside the name of the font, possibly with a link to their website, but that is not required.
1.2 Can the fonts be included with Free/Libre and Open Source Software collections such as GNU/Linux and BSD distributions and repositories?
Yes! Fonts licensed under the OFL can be freely included alongside other software under FLOSS (Free/Libre and Open Source Software) licenses. Since fonts are typically aggregated with, not merged into, existing software, there is little need to be concerned about incompatibility with existing software licenses. You may also repackage the fonts and the accompanying components in a .rpm or .deb package (or other similar package formats or installers) and include them in distribution CD/DVDs and online repositories. (Also see section 5.9 about rebuilding from source.)
1.3 I want to distribute the fonts with my program. Does this mean my program also has to be Free/Libre and Open Source Software?
No. Only the portions based on the Font Software are required to be released under the OFL. The intent of the license is to allow aggregation or bundling with software under restricted licensing as well.
1.4 Can I sell a software package that includes these fonts?
Yes, you can do this with both the Original Version and a Modified Version of the fonts. Examples of bundling made possible by the OFL would include: word processors, design and publishing applications, training and educational software, games and entertainment software, mobile device applications, etc.
1.5 Can I include the fonts on a CD of freeware or commercial fonts?
Yes, as long some other font or software is also on the disk, so the OFL font is not sold by itself.
1.6 Why won't the OFL let me sell the fonts alone?
The intent is to keep people from making money by simply redistributing the fonts. The only people who ought to profit directly from the fonts should be the original authors, and those authors have kindly given up potential direct income to distribute their fonts under the OFL. Please honour and respect their contribution!
1.7 What about sharing OFL fonts with friends on a CD, DVD or USB stick?
You are very welcome to share open fonts with friends, family and colleagues through removable media. Just remember to include the full font package, including any copyright notices and licensing information as available in OFL.txt. In the case where you sell the font, it has to come bundled with software.
1.8 Can I host the fonts on a web site for others to use?
Yes, as long as you make the full font package available. In most cases it may be best to point users to the main site that distributes the Original Version so they always get the most recent stable and complete version. See also discussion of web fonts in Section 2.
1.9 Can I host the fonts on a server for use over our internal network?
Yes. If the fonts are transferred from the server to the client computer by means that allow them to be used even if the computer is no longer attached to the network, the full package (copyright notices, licensing information, etc.) should be included.
1.10 Does the full OFL license text always need to accompany the font?
The only situation in which an OFL font can be distributed without the text of the OFL (either in a separate file or in font metadata), is when a font is embedded in a document or bundled within a program. In the case of metadata included within a font, it is legally sufficient to include only a link to the text of the OFL on http://scripts.sil.org/OFL, but we strongly recommend against this. Most modern font formats include metadata fields that will accept the full OFL text, and full inclusion increases the likelihood that users will understand and properly apply the license.
1.11 What do you mean by 'embedding'? How does that differ from other means of distribution?
By 'embedding' we mean inclusion of the font in a document or file in a way that makes extraction (and redistribution) difficult or clearly discouraged. In many cases the names of embedded fonts might also not be obvious to those reading the document, the font data format might be altered, and only a subset of the font - only the glyphs required for the text - might be included. Any other means of delivering a font to another person is considered 'distribution', and needs to be accompanied by any copyright notices and licensing information available in OFL.txt.
1.12 So can I embed OFL fonts in my document?
Yes, either in full or a subset. The restrictions regarding font modification and redistribution do not apply, as the font is not intended for use outside the document.
1.13 Does embedding alter the license of the document itself?
No. Referencing or embedding an OFL font in any document does not change the license of the document itself. The requirement for fonts to remain under the OFL does not apply to any document created using the fonts and their derivatives. Similarly, creating any kind of graphic using a font under OFL does not make the resulting artwork subject to the OFL.
1.14 If OFL fonts are extracted from a document in which they are embedded (such as a PDF file), what can be done with them? Is this a risk to author(s)?
The few utilities that can extract fonts embedded in a PDF will typically output limited amounts of outlines - not a complete font. To create a working font from this method is much more difficult and time consuming than finding the source of the original OFL font. So there is little chance that an OFL font would be extracted and redistributed inappropriately through this method. Even so, copyright laws address any misrepresentation of authorship. All Font Software released under the OFL and marked as such by the author(s) is intended to remain under this license regardless of the distribution method, and cannot be redistributed under any other license. We strongly discourage any font extraction - we recommend directly using the font sources instead - but if you extract font outlines from a document, please be considerate: respect the work of the author(s) and the licensing model.
1.15 What about distributing fonts with a document? Within a compressed folder structure? Is it distribution, bundling or embedding?
Certain document formats may allow the inclusion of an unmodified font within their file structure which may consist of a compressed folder containing the various resources forming the document (such as pictures and thumbnails). Including fonts within such a structure is understood as being different from embedding but rather similar to bundling (or mere aggregation) which the license explicitly allows. In this case the font is conveyed unchanged whereas embedding a font usually transforms it from the original format. The OFL does not allow anyone to extract the font from such a structure to then redistribute it under another license. The explicit permission to redistribute and embed does not cancel the requirement for the Font Software to remain under the license chosen by its author(s). Even if the font travels inside the document as one of its assets, it should not lose its authorship information and licensing.
1.16 What about ebooks shipping with open fonts?
The requirements differ depending on whether the fonts are linked, embedded or distributed (bundled or aggregated). Some ebook formats use web technologies to do font linking via @font-face, others are designed for font embedding, some use fonts distributed with the document or reading software, and a few rely solely on the fonts already present on the target system. The license requirements depend on the type of inclusion as discussed in 1.15.
1.17 Can Font Software released under the OFL be subject to URL-based access restrictions methods or DRM (Digital Rights Management) mechanisms?
Yes, but these issues are out-of-scope for the OFL. The license itself neither encourages their use nor prohibits them since such mechanisms are not implemented in the components of the Font Software but through external software. Such restrictions are put in place for many different purposes corresponding to various usage scenarios. One common example is to limit potentially dangerous cross-site scripting attacks. However, in the spirit of libre/open fonts and unrestricted writing systems, we strongly encourage open sharing and reuse of OFL fonts, and the establishment of an environment where such restrictions are unnecessary. Note that whether you wish to use such mechanisms or you prefer not to, you must still abide by the rules set forth by the OFL when using fonts released by their authors under this license. Derivative fonts must be licensed under the OFL, even if they are part of a service for which you charge fees and/or for which access to source code is restricted. You may not sell the fonts on their own - they must be part of a larger software package, bundle or subscription plan. For example, even if the OFL font is distributed in a software package or via an online service using a DRM mechanism, the user would still have the right to extract that font, use, study, modify and redistribute it under the OFL.
1.18 I've come across a font released under the OFL. How can I easily get more information about the Original Version? How can I know where it stands compared to the Original Version or other Modified Versions?
Consult the copyright statement(s) in the license for ways to contact the original authors. Consult the FONTLOG (see section 6 for more details and examples) for information on how the font differs from the Original Version, and get in touch with the various contributors via the information in the acknowledgement section. Please consider using the Original Versions of the fonts whenever possible.
1.19 What do you mean in condition 4 of the OFL's permissions and conditions? Can you provide examples of abusive promotion / endorsement / advertisement vs. normal acknowledgement?
The intent is that the goodwill and reputation of the author(s) should not be used in a way that makes it sound like the original author(s) endorse or approve of a specific Modified Version or software bundle. For example, it would not be right to advertise a word processor by naming the author(s) in a listing of software features, or to promote a Modified Version on a web site by saying "designed by ...". However, it would be appropriate to acknowledge the author(s) if your software package has a list of people who deserve thanks. We realize that this can seem to be a grey area, but the standard used to judge an acknowledgement is that if the acknowledgement benefits the author(s) it is allowed, but if it primarily benefits other parties, or could reflect poorly on the author(s), then it is not.
1.20 I'm writing a small app for mobile platforms, do I need to include the whole package?
If you bundle a font under the OFL with your mobile app you must comply with the terms of the license. At a minimum you must include the copyright statement, the license notice and the license text. A mention of this information in your About box or Changelog, with a link to where the font package is from, is good practice, and the extra space needed to carry these items is very small. You do not, however, need to include the full contents of the font package - only the fonts you use and the copyright and license that apply to them. For example, if you only use the regular weight in your app, you do not need to include the italic and bold versions.
1.21 What about including OFL fonts by default in my firmware or dedicated operating system?
Many such systems are restricted and turned into appliances so that users cannot study or modify them. Using open fonts to increase quality and language coverage is a great idea, but you need to be aware that if there is a way for users to extract fonts you cannot legally prevent them from doing that. The fonts themselves, including any changes you make to them, must be distributed under the OFL even if your firmware has a more restrictive license. If you do transform the fonts and change their formats when you include them in your firmware you must respect any names reserved by the font authors via the RFN mechanism and pick your own font name. Alternatively if you directly add a font under the OFL to the font folder of your firmware without modifying or optimizing it you are simply bundling the font like with any other software collection, and do not need to make any further changes.
1.22 Can I make and publish CMS themes or templates that use OFL fonts? Can I include the fonts themselves in the themes or templates? Can I sell the whole package?
Yes, you are very welcome to integrate open fonts into themes and templates for your preferred CMS and make them more widely available. Remember that you can only sell the fonts and your CMS add-on as part of a software bundle. (See 1.4 for details and examples about selling bundles).
1.23 Can OFL fonts be included in services that deliver fonts to the desktop from remote repositories? Even if they contain both OFL and non-OFL fonts?
Yes. Some foundries have set up services to deliver fonts to subscribers directly to desktops from their online repositories; similarly, plugins are available to preview and use fonts directly in your design tool or publishing suite. These services may mix open and restricted fonts in the same channel, however they should make a clear distinction between them to users. These services should also not hinder users (such as through DRM or obfuscation mechanisms) from extracting and using the OFL fonts in other environments, or continuing to use OFL fonts after subscription terms have ended, as those uses are specifically allowed by the OFL.
1.24 Can services that provide or distribute OFL fonts restrict my use of them?
No. The terms of use of such services cannot replace or restrict the terms of the OFL, as that would be the same as distributing the fonts under a different license, which is not allowed. You are still entitled to use, modify and redistribute them as the original authors have intended outside of the sole control of that particular distribution channel. Note, however, that the fonts provided by these services may differ from the Original Versions.
2 USING OFL FONTS FOR WEBPAGES AND ONLINE WEB FONT SERVICES
NOTE: This section often refers to a separate paper on 'Web Fonts & RFNs'. This is available at http://scripts.sil.org/OFL_web_fonts_and_RFNs
2.1 Can I make webpages using these fonts?
Yes! Go ahead! Using CSS (Cascading Style Sheets) is recommended. Your three best options are:
- referring directly in your stylesheet to open fonts which may be available on the user's system
- providing links to download the full package of the font - either from your own website or from elsewhere - so users can install it themselves
- using @font-face to distribute the font directly to browsers. This is recommended and explicitly allowed by the licensing model because it is distribution. The font file itself is distributed with other components of the webpage. It is not embedded in the webpage but referenced through a web address which will cause the browser to retrieve and use the corresponding font to render the webpage (see 1.11 and 1.15 for details related to embedding fonts into documents). As you take advantage of the @font-face cross-platform standard, be aware that web fonts are often tuned for a web environment and not intended for installation and use outside a browser. The reasons in favour of using web fonts are to allow design of dynamic text elements instead of static graphics, to make it easier for content to be localized and translated, indexed and searched, and all this with cross-platform open standards without depending on restricted extensions or plugins. You should check the CSS cascade (the order in which fonts are being called or delivered to your users) when testing.
2.2 Can I make and use WOFF (Web Open Font Format) versions of OFL fonts?
Yes, but you need to be careful. A change in font format normally is considered modification, and Reserved Font Names (RFNs) cannot be used. Because of the design of the WOFF format, however, it is possible to create a WOFF version that is not considered modification, and so would not require a name change. You are allowed to create, use and distribute a WOFF version of an OFL font without changing the font name, but only if:
- the original font data remains unchanged except for WOFF compression, and
- WOFF-specific metadata is either omitted altogether or present and includes, unaltered, the contents of all equivalent metadata in the original font.
If the original font data or metadata is changed, or the WOFF-specific metadata is incomplete, the font must be considered a Modified Version, the OFL restrictions would apply and the name of the font must be changed: any RFNs cannot be used and copyright notices and licensing information must be included and cannot be deleted or modified. You must come up with a unique name - we recommend one corresponding to your domain or your particular web application. Be aware that only the original author(s) can use RFNs. This is to prevent collisions between a derivative tuned to your audience and the original upstream version and so to reduce confusion.
Please note that most WOFF conversion tools and online services do not meet the two requirements listed above, and so their output must be considered a Modified Version. So be very careful and check to be sure that the tool or service you're using is compressing unchanged data and completely and accurately reflecting the original font metadata.
2.3 What about other web font formats such as EOT/EOTLite/CWT/etc.?
In most cases these formats alter the original font data more than WOFF, and do not completely support appropriate metadata, so their use must be considered modification and RFNs may not be used. However, there may be certain formats or usage scenarios that may allow the use of RFNs. See http://scripts.sil.org/OFL_web_fonts_and_RFNs
2.4 Can I make OFL fonts available through web font online services?
Yes, you are welcome to include OFL fonts in online web font services as long as you properly meet all the conditions of the license. The origin and open status of the font should be clear among the other fonts you are hosting. Authorship, copyright notices and license information must be sufficiently visible to your users or subscribers so they know where the font comes from and the rights granted by the author(s). Make sure the font file contains the needed copyright notice(s) and licensing information in its metadata. Please double-check the accuracy of every field to prevent contradictory information. Other font formats, including EOT/EOTLite/CWT and superior alternatives like WOFF, already provide fields for this information. Remember that if you modify the font within your library or convert it to another format for any reason the OFL restrictions apply and you need to change the names accordingly. Please respect the author's wishes as expressed in the OFL and do not misrepresent original designers and their work. Don't lump quality open fonts together with dubious freeware or public domain fonts. Consider how you can best work with the original designers and foundries, support their efforts and generate goodwill that will benefit your service. (See 1.17 for details related to URL-based access restrictions methods or DRM mechanisms).
2.5 Some web font formats and services provide ways of "optimizing" the font for a particular website or web application; is that allowed?
Yes, it is permitted, but remember that these optimized versions are Modified Versions and so must follow OFL requirements like appropriate renaming. Also you need to bear in mind the other important parameters beyond compression, speed and responsiveness: you need to consider the audience of your particular website or web application, as choosing some optimization parameters may turn out to be less than ideal for them. Subsetting by removing certain glyphs or features may seriously limit functionality of the font in various languages that your users expect. It may also introduce degradation of quality in the rendering or specific bugs on the various target platforms compared to the original font from upstream. In other words, remember that one person's optimized font may be another person's missing feature. Various advanced typographic features (OpenType, Graphite or AAT) are also available through CSS and may provide the desired effects without the need to modify the font.
2.6 Is subsetting a web font considered modification?
Yes. Removing any parts of the font when delivering a web font to a browser, including unused glyphs and smart font code, is considered modification. This is permitted by the OFL but would not normally allow the use of RFNs. Some newer subsetting technologies may be able to subset in a way that allows users to effectively have access to the complete font, including smart font behaviour. See 2.8 and http://scripts.sil.org/OFL_web_fonts_and_RFNs
2.7 Are there any situations in which a modified web font could use RFNs?
Yes. If a web font is optimized only in ways that preserve Functional Equivalence (see 2.8), then it may use RFNs, as it reasonably represents the Original Version and respects the intentions of the author(s) and the main purposes of the RFN mechanism (avoids collisions, protects authors, minimizes support, encourages derivatives). However this is technically very difficult and often impractical, so a much better scenario is for the web font service or provider to sign a separate agreement with the author(s) that allows the use of RFNs for Modified Versions.
2.8 How do you know if an optimization to a web font preserves Functional Equivalence?
Functional Equivalence is described in full in the 'Web fonts and RFNs' paper at http://scripts.sil.org/OFL_web_fonts_and_RFNs, in general, an optimized font is deemed to be Functionally Equivalent (FE) to the Original Version if it:
- Supports the same full character inventory. If a character can be properly displayed using the Original Version, then that same character, encoded correctly on a web page, will display properly.
- Provides the same smart font behavior. Any dynamic shaping behavior that works with the Original Version should work when optimized, unless the browser or environment does not support it. There does not need to be guaranteed support in the client, but there should be no forced degradation of smart font or shaping behavior, such as the removal or obfuscation of OpenType, Graphite or AAT tables.
- Presents text with no obvious degradation in visual quality. The lettershapes should be equally (or more) readable, within limits of the rendering platform.
- Preserves original author, project and license metadata. At a minimum, this should include: Copyright and authorship; The license as stated in the Original Version, whether that is the full text of the OFL or a link to the web version; Any RFN declarations; Information already present in the font or documentation that points back to the Original Version, such as a link to the project or the author's website.
If an optimized font meets these requirements, and so is considered to be FE, then it's very likely that the original author would feel that the optimized font is a good and reasonable equivalent. If it falls short of any of these requirements, the optimized font does not reasonably represent the Original Version, and so should be considered to be a Modified Version. Like other Modified Versions, it would not be allowed to use any RFNs and you simply need to pick your own font name.
2.9 Isn't use of web fonts another form of embedding?
No. Unlike embedded fonts in a PDF, web fonts are not an integrated part of the document itself. They are not specific to a single document and are often applied to thousands of documents around the world. The font data is not stored alongside the document data and often originates from a different location. The ease by which the web fonts used by a document may be identified and downloaded for desktop use demonstrates that they are philosophically and technically separate from the web pages that specify them. See http://scripts.sil.org/OFL_web_fonts_and_RFNs
2.10 So would it be better to not use RFNs at all if you want your font to be distributed by a web fonts service?
No. Although the OFL does not require authors to use RFNs, the RFN mechanism is an important part of the OFL model and completely compatible with web font services. If that web font service modifies the fonts, then the best solution is to sign a separate agreement for the use of any RFNs. It is perfectly valid for an author to not declare any RFNs, but before they do so they need to fully understand the benefits they are giving up, and the overall negative effect of allowing many different versions bearing the same name to be widely distributed. As a result, we don't generally recommend it.
2.11 What should an agreement for the use of RFNs say? Are there any examples?
There is no prescribed format for this agreement, as legal systems vary, and no recommended examples. Authors may wish to add specific clauses to further restrict use, require author review of Modified Versions, establish user support mechanisms or provide terms for ending the agreement. Such agreements are usually not public, and apply only to the main parties. However, it would be very beneficial for web font services to clearly state when they have established such agreements, so that the public understands clearly that their service is operating appropriately.
See the separate paper on 'Web Fonts & RFNs' for in-depth discussion of issues related to the use of RFNs for web fonts. This is available at http://scripts.sil.org/OFL_web_fonts_and_RFNs
3 MODIFYING OFL-LICENSED FONTS
3.1 Can I change the fonts? Are there any limitations to what things I can and cannot change?
You are allowed to change anything, as long as such changes do not violate the terms of the license. In other words, you are not allowed to remove the copyright statement(s) from the font, but you could put additional information into it that covers your contribution. See the placeholders in the OFL header template for recommendations on where to add your own statements. (Remember that, when authors have reserved names via the RFN mechanism, you need to change the internal names of the font to your own font name when making your modified version even if it is just a small change.)
3.2 I have a font that needs a few extra glyphs - can I take them from an OFL licensed font and copy them into mine?
Yes, but if you distribute that font to others it must be under the OFL, and include the information mentioned in condition 2 of the license.
3.3 Can I charge people for my additional work? In other words, if I add a bunch of special glyphs or OpenType/Graphite/AAT code, can I sell the enhanced font?
Not by itself. Derivative fonts must be released under the OFL and cannot be sold by themselves. It is permitted, however, to include them in a larger software package (such as text editors, office suites or operating systems), even if the larger package is sold. In that case, you are strongly encouraged, but not required, to also make that derived font easily and freely available outside of the larger package.
3.4 Can I pay someone to enhance the fonts for my use and distribution?
Yes. This is a good way to fund the further development of the fonts. Keep in mind, however, that if the font is distributed to others it must be under the OFL. You won't be able to recover your investment by exclusively selling the font, but you will be making a valuable contribution to the community. Please remember how you have benefited from the contributions of others.
3.5 I need to make substantial revisions to the font to make it work with my program. It will be a lot of work, and a big investment, and I want to be sure that it can only be distributed with my program. Can I restrict its use?
No. If you redistribute a Modified Version of the font it must be under the OFL. You may not restrict it in any way beyond what the OFL permits and requires. This is intended to ensure that all released improvements to the fonts become available to everyone. But you will likely get an edge over competitors by being the first to distribute a bundle with the enhancements. Again, please remember how you have benefited from the contributions of others.
3.6 Do I have to make any derivative fonts (including extended source files, build scripts, documentation, etc.) publicly available?
No, but please consider sharing your improvements with others. You may find that you receive in return more than what you gave.
3.7 If a trademark is claimed in the OFL font, does that trademark need to remain in modified fonts?
Yes. Any trademark notices must remain in any derivative fonts to respect trademark laws, but you may add any additional trademarks you claim, officially registered or not. For example if an OFL font called "Foo" contains a notice that "Foo is a trademark of Acme", then if you rename the font to "Bar" when creating a Modified Version, the new trademark notice could say "Foo is a trademark of Acme Inc. - Bar is a trademark of Roadrunner Technologies Ltd.". Trademarks work alongside the OFL and are not subject to the terms of the licensing agreement. The OFL does not grant any rights under trademark law. Bear in mind that trademark law varies from country to country and that there are no international trademark conventions as there are for copyright. You may need to significantly invest in registering and defending a trademark for it to remain valid in the countries you are interested in. This may be costly for an individual independent designer.
3.8 If I commit changes to a font (or publish a branch in a DVCS) as part of a public open source software project, do I have to change the internal font names?
Only if there are declared RFNs. Making a public commit or publishing a public branch is effectively redistributing your modifications, so any change to the font will require that you do not use the RFNs. Even if there are no RFNs, it may be useful to change the name or add a suffix indicating that a particular version of the font is still in development and not released yet. This will clearly indicate to users and fellow designers that this particular font is not ready for release yet. See section 5 for more details.
4 LICENSING YOUR ORIGINAL FONTS UNDER THE OFL
4.1 Can I use the SIL OFL for my own fonts?
Yes! We heartily encourage everyone to use the OFL to distribute their own original fonts. It is a carefully constructed license that allows great freedom along with enough artistic integrity protection for the work of the authors as well as clear rules for other contributors and those who redistribute the fonts. The licensing model is used successfully by various organisations, both for-profit and not-for-profit, to release fonts of varying levels of scope and complexity.
4.2 What do I have to do to apply the OFL to my font?
If you want to release your fonts under the OFL, we recommend you do the following:
4.2.1 Put your copyright and Reserved Font Names information at the beginning of the main OFL.txt file in place of the dedicated placeholders (marked with the <> characters). Include this file in your release package.
4.2.2 Put your copyright and the OFL text with your chosen Reserved Font Name(s) into your font files (the copyright and license fields). A link to the OFL text on the OFL web site is an acceptable (but not recommended) alternative. Also add this information to any other components (build scripts, glyph databases, documentation, test files, etc). Accurate metadata in your font files is beneficial to you as an increasing number of applications are exposing this information to the user. For example, clickable links can bring users back to your website and let them know about other work you have done or services you provide. Depending on the format of your fonts and sources, you can use template human-readable headers or machine-readable metadata. You should also double-check that there is no conflicting metadata in the font itself contradicting the license, such as the fstype bits in the os2 table or fields in the name table.
4.2.3 Write an initial FONTLOG.txt for your font and include it in the release package (see Section 6 and Appendix A for details including a template).
4.2.4 Include the relevant practical documentation on the license by adding the current OFL-FAQ.txt file in your package.
4.2.5 If you wish you can use the OFL graphics (http://scripts.sil.org/OFL_logo) on your website.
4.3 Will you make my font OFL for me?
We won't do the work for you. We can, however, try to answer your questions, unfortunately we do not have the resources to review and check your font packages for correct use of the OFL. We recommend you turn to designers, foundries or consulting companies with experience in doing open font design to provide this service to you.
4.4 Will you distribute my OFL font for me?
No, although if the font is of sufficient quality and general interest we may include a link to it on our partial list of OFL fonts on the OFL web site. You may wish to consider other open font catalogs or hosting services, such as the Unifont Font Guide (http://unifont.org/fontguide), The League of Movable Type (http://theleagueofmovabletype.com) or the Open Font Library (http://openfontlibrary.org/), which despite the name has no direct relationship to the OFL or SIL. We do not endorse any particular catalog or hosting service - it is your responsibility to determine if the service is right for you and if it treats authors with fairness.
4.5 Why should I use the OFL for my fonts?
- to meet needs for fonts that can be modified to support lesser-known languages
- to provide a legal and clear way for people to respect your work but still use it (and reduce piracy)
- to involve others in your font project
- to enable your fonts to be expanded with new weights and improved writing system/language support
- to allow more technical font developers to add features to your design (such as OpenType, Graphite or AAT support)
- to renew the life of an old font lying on your hard drive with no business model
- to allow your font to be included in Libre Software operating systems like Ubuntu
- to give your font world status and wide, unrestricted distribution
- to educate students about quality typeface and font design
- to expand your test base and get more useful feedback
- to extend your reach to new markets when users see your metadata and go to your website
- to get your font more easily into one of the web font online services
- to attract attention for your commercial fonts
- to make money through web font services
- to make money by bundling fonts with applications
- to make money adjusting and extending existing open fonts
- to get a better chance that foundations/NGOs/charities/companies who commission fonts will pick you
- to be part of a sharing design and development community
- to give back and contribute to a growing body of font sources
5 CHOOSING RESERVED FONT NAMES
5.1 What are Reserved Font Names?
These are font names, or portions of font names, that the author has chosen to reserve for use only with the Original Version of the font, or for Modified Version(s) created by the original author.
5.2 Why can't I use the Reserved Font Names in my derivative font names? I'd like people to know where the design came from.
The best way to acknowledge the source of the design is to thank the original authors and any other contributors in the files that are distributed with your revised font (although no acknowledgement is required). The FONTLOG is a natural place to do this. Reserved Font Names ensure that the only fonts that have the original names are the unmodified Original Versions. This allows designers to maintain artistic integrity while allowing collaboration to happen. It eliminates potential confusion and name conflicts. When choosing a name, be creative and avoid names that reuse almost all the same letters in the same order or sound like the original. It will help everyone if Original Versions and Modified Versions can easily be distinguished from one another and from other derivatives. Any substitution and matching mechanism is outside the scope of the license.
5.3 What do you mean by "primary name as presented to the user"? Are you referring to the font menu name?
Yes, this applies to the font menu name and other mechanisms that specify a font in a document. It would be fine, however, to keep a text reference to the original fonts in the description field, in your modified source file or in documentation provided alongside your derivative as long as no one could be confused that your modified source is the original. But you cannot use the Reserved Font Names in any way to identify the font to the user (unless the Copyright Holder(s) allow(s) it through a separate agreement). Users who install derivatives (Modified Versions) on their systems should not see any of the original Reserved Font Names in their font menus, for example. Again, this is to ensure that users are not confused and do not mistake one font for another and so expect features only another derivative or the Original Version can actually offer.
5.4 Am I not allowed to use any part of the Reserved Font Names?
You may not use individual words from the Reserved Font Names, but you would be allowed to use parts of words, as long as you do not use any word from the Reserved Font Names entirely. We do not recommend using parts of words because of potential confusion, but it is allowed. For example, if "Foobar" was a Reserved Font Name, you would be allowed to use "Foo" or "bar", although we would not recommend it. Such an unfortunate choice would confuse the users of your fonts as well as make it harder for other designers to contribute.
5.5 So what should I, as an author, identify as Reserved Font Names?
Original authors are encouraged to name their fonts using clear, distinct names, and only declare the unique parts of the name as Reserved Font Names. For example, the author of a font called "Foobar Sans" would declare "Foobar" as a Reserved Font Name, but not "Sans", as that is a common typographical term, and may be a useful word to use in a derivative font name. Reserved Font Names should also be single words for simplicity and legibility. A font called "Flowing River" should have Reserved Font Names "Flowing" and "River", not "Flowing River". You also need to be very careful about reserving font names which are already linked to trademarks (whether registered or not) which you do not own.
5.6 Do I, as an author, have to identify any Reserved Font Names?
No. RFNs are optional and not required, but we encourage you to use them. This is primarily to avoid confusion between your work and Modified Versions. As an author you can release a font under the OFL and not declare any Reserved Font Names. There may be situations where you find that using no RFNs and letting your font be changed and modified - including any kind of modification - without having to change the original name is desirable. However you need to be fully aware of the consequences. There will be no direct way for end-users and other designers to distinguish your Original Version from many Modified Versions that may be created. You have to trust whoever is making the changes and the optimizations to not introduce problematic changes. The RFNs you choose for your own creation have value to you as an author because they allow you to maintain artistic integrity and keep some control over the distribution channel to your end-users. For discussion of RFNs and web fonts see section 2.
5.7 Are any names (such as the main font name) reserved by default?
No. That is a change to the license as of version 1.1. If you want any names to be Reserved Font Names, they must be specified after the copyright statement(s).
5.8 Is there any situation in which I can use Reserved Font Names for a Modified Version?
The Copyright Holder(s) can give certain trusted parties the right to use any of the Reserved Font Names through separate written agreements. For example, even if "Foobar" is a RFN, you could write up an agreement to give company "XYZ" the right to distribute a modified version with a name that includes "Foobar". This allows for freedom without confusion. The existence of such an agreement should be made as clear as possible to downstream users and designers in the distribution package and the relevant documentation. They need to know if they are a party to the agreement or not and what they are practically allowed to do or not even if all the details of the agreement are not public.
5.9 Do font rebuilds require a name change? Do I have to change the name of the font when my packaging workflow includes a full rebuild from source?
Yes, all rebuilds which change the font data and the smart code are Modified Versions and the requirements of the OFL apply: you need to respect what the Author(s) have chosen in terms of Reserved Font Names. However if a package (or installer) is simply a wrapper or a compressed structure around the final font - leaving them intact on the inside - then no name change is required. Please get in touch with the author(s) and copyright holder(s) to inquire about the presence of font sources beyond the final font file(s) and the recommended build path. That build path may very well be non-trivial and hard to reproduce accurately by the maintainer. If a full font build path is made available by the upstream author(s) please be aware that any regressions and changes you may introduce when doing a rebuild for packaging purposes is your own responsibility as a package maintainer since you are effectively creating a separate branch. You should make it very clear to your users that your rebuilt version is not the canonical one from upstream.
5.10 Can I add other Reserved Font Names when making a derivative font?
Yes. List your additional Reserved Font Names after your additional copyright statement, as indicated with example placeholders at the top of the OFL.txt file. Be sure you do not remove any existing RFNs but only add your own. RFN statements should be placed next to the copyright statement of the relevant author as indicated in the OFL.txt template to make them visible to designers wishing to make their separate version.
6 ABOUT THE FONTLOG
6.1 What is this FONTLOG thing exactly?
It has three purposes: 1) to provide basic information on the font to users and other designers and developers, 2) to document changes that have been made to the font or accompanying files, either by the original authors or others, and 3) to provide a place to acknowledge authors and other contributors. Please use it!
6.2 Is the FONTLOG required?
It is not a requirement of the license, but we strongly recommend you have one.
6.3 Am I required to update the FONTLOG when making Modified Versions?
No, but users, designers and other developers might get very frustrated with you if you don't. People need to know how derivative fonts differ from the original, and how to take advantage of the changes, or build on them. There are utilities that can help create and maintain a FONTLOG, such as the FONTLOG support in FontForge.
6.4 What should the FONTLOG look like?
It is typically a separate text file (FONTLOG.txt), but can take other formats. It commonly includes these four sections:
- brief header describing the FONTLOG itself and name of the font family
- Basic Font Information - description of the font family, purpose and breadth
- ChangeLog - chronological listing of changes
- Acknowledgements - list of authors and contributors with contact information
It could also include other sections, such as: where to find documentation, how to make contributions, information on contributing organizations, source code details, and a short design guide. See Appendix A for an example FONTLOG.
7 MAKING CONTRIBUTIONS TO OFL PROJECTS
7.1 Can I contribute work to OFL projects?
In many cases, yes. It is common for OFL fonts to be developed by a team of people who welcome contributions from the wider community. Contact the original authors for specific information on how to participate in their projects.
7.2 Why should I contribute my changes back to the original authors?
It would benefit many people if you contributed back in response to what you've received. Your contributions and improvements to the fonts and other components could be a tremendous help and would encourage others to contribute as well and 'give back'. You will then benefit from other people's contributions as well. Sometimes maintaining your own separate version takes more effort than merging back with the original. Be aware that any contributions, however, must be either your own original creation or work that you own, and you may be asked to affirm that clearly when you contribute.
7.3 I've made some very nice improvements to the font. Will you consider adopting them and putting them into future Original Versions?
Most authors would be very happy to receive such contributions. Keep in mind that it is unlikely that they would want to incorporate major changes that would require additional work on their end. Any contributions would likely need to be made for all the fonts in a family and match the overall design and style. Authors are encouraged to include a guide to the design with the fonts. It would also help to have contributions submitted as patches or clearly marked changes - the use of smart source revision control systems like subversion, mercurial, git or bzr is a good idea. Please follow the recommendations given by the author(s) in terms of preferred source formats and configuration parameters for sending contributions. If this is not indicated in a FONTLOG or other documentation of the font, consider asking them directly. Examples of useful contributions are bug fixes, additional glyphs, stylistic alternates (and the smart font code to access them) or improved hinting. Keep in mind that some kinds of changes (esp. hinting) may be technically difficult to integrate.
7.4 How can I financially support the development of OFL fonts?
It is likely that most authors of OFL fonts would accept financial contributions - contact them for instructions on how to do this. Such contributions would support future development. You can also pay for others to enhance the fonts and contribute the results back to the original authors for inclusion in the Original Version.
8 ABOUT THE LICENSE ITSELF
8.1 I see that this is version 1.1 of the license. Will there be later changes?
Version 1.1 is the first minor revision of the OFL. We are confident that version 1.1 will meet most needs, but are open to future improvements. Any revisions would be for future font releases, and previously existing licenses would remain in effect. No retroactive changes are possible, although the Copyright Holder(s) can re-release the font under a revised OFL. All versions will be available on our web site: http://scripts.sil.org/OFL.
8.2 Does this license restrict the rights of the Copyright Holder(s)?
No. The Copyright Holder(s) still retain(s) all the rights to their creation; they are only releasing a portion of it for use in a specific way. For example, the Copyright Holder(s) may choose to release a 'basic' version of their font under the OFL, but sell a restricted 'enhanced' version under a different license. They may also choose to release the same font under both the OFL and some other license. Only the Copyright Holder(s) can do this, and doing so does not change the terms of the OFL as it applies to that font.
8.3 Is the OFL a contract or a license?
The OFL is a worldwide license based on international copyright agreements and conventions. It is not a contract and so does not require you to sign it to have legal validity. By using, modifying and redistributing components under the OFL you indicate that you accept the license.
8.4 I really like the terms of the OFL, but want to change it a little. Am I allowed to take ideas and actual wording from the OFL and put them into my own custom license for distributing my fonts?
We strongly recommend against creating your very own unique open licensing model. Using a modified or derivative license will likely cut you off - along with the font(s) under that license - from the community of designers using the OFL, potentially expose you and your users to legal liabilities, and possibly put your work and rights at risk. The OFL went though a community and legal review process that took years of effort, and that review is only applicable to an unmodified OFL. The text of the OFL has been written by SIL (with review and consultation from the community) and is copyright (c) 2005-2017 SIL International. You may re-use the ideas and wording (in part, not in whole) in another non-proprietary license provided that you call your license by another unambiguous name, that you do not use the preamble, that you do not mention SIL and that you clearly present your license as different from the OFL so as not to cause confusion by being too similar to the original. If you feel the OFL does not meet your needs for an open license, please contact us.
8.5 Can I quote from the OFL FAQ?
Yes, SIL gives permission to quote from the OFL FAQ (OFL-FAQ.txt), in whole or in part, provided that the quoted text is:
- unmodified,
- used to help explain the intent of the OFL, rather than cause misunderstanding, and
- accompanied with the following attribution: "From the OFL FAQ (OFL-FAQ.txt), copyright (c) 2005-2017 SIL International. Used by permission. http://scripts.sil.org/OFL-FAQ_web".
8.6 Can I translate the license and the FAQ into other languages?
SIL certainly recognises the need for people who are not familiar with English to be able to understand the OFL and its use. Making the license very clear and readable has been a key goal for the OFL, but we know that people understand their own language best.
If you are an experienced translator, you are very welcome to translate the OFL and OFL-FAQ so that designers and users in your language community can understand the license better. But only the original English version of the license has legal value and has been approved by the community. Translations do not count as legal substitutes and should only serve as a way to explain the original license. SIL - as the author and steward of the license for the community at large - does not approve any translation of the OFL as legally valid because even small translation ambiguities could be abused and create problems.
SIL gives permission to publish unofficial translations into other languages provided that they comply with the following guidelines:
- Put the following disclaimer in both English and the target language stating clearly that the translation is unofficial:
"This is an unofficial translation of the SIL Open Font License into . It was not published by SIL International, and does not legally state the distribution terms for fonts that use the OFL. A release under the OFL is only valid when using the original English text. However, we recognize that this unofficial translation will help users and designers not familiar with English to better understand and use the OFL. We encourage designers who consider releasing their creation under the OFL to read the OFL-FAQ in their own language if it is available. Please go to http://scripts.sil.org/OFL for the official version of the license and the accompanying OFL-FAQ."
- Keep your unofficial translation current and update it at our request if needed, for example if there is any ambiguity which could lead to confusion.
If you start such a unofficial translation effort of the OFL and OFL-FAQ please let us know.
8.7 Does the OFL have an explicit expiration term?
No, the implicit intent of the OFL is that the permissions granted are perpetual and irrevocable.
9 ABOUT SIL INTERNATIONAL
9.1 Who is SIL International and what do they do?
SIL serves language communities worldwide, building their capacity for sustainable language development, by means of research, translation, training and materials development. SIL makes its services available to all without regard to religious belief, political ideology, gender, race, or ethnic background. SIL's members and volunteers share a Christian commitment.
9.2 What does this have to do with font licensing?
The ability to read, write, type and publish in one's own language is one of the most critical needs for millions of people around the world. This requires fonts that are widely available and support lesser-known languages. SIL develops - and encourages others to develop - a complete stack of writing systems implementation components available under open licenses. This open stack includes input methods, smart fonts, smart rendering libraries and smart applications. There has been a need for a common open license that is specifically applicable to fonts and related software (a crucial component of this stack), so SIL developed the SIL Open Font License with the help of the Free/Libre and Open Source Software community.
9.3 How can I contact SIL?
Our main web site is: http://www.sil.org/
Our site about complex scripts is: http://scripts.sil.org/
Information about this license (and contact information) is at: http://scripts.sil.org/OFL
APPENDIX A - FONTLOG EXAMPLE
Here is an example of the recommended format for a FONTLOG, although other formats are allowed.
-----
FONTLOG for the GlobalFontFamily fonts
This file provides detailed information on the GlobalFontFamily Font Software. This information should be distributed along with the GlobalFontFamily fonts and any derivative works.
Basic Font Information
GlobalFontFamily is a Unicode typeface family that supports all languages that use the Latin script and its variants, and could be expanded to support other scripts.
NewWorldFontFamily is based on the GlobalFontFamily and also supports Greek, Hebrew, Cyrillic and Armenian.
More specifically, this release supports the following Unicode ranges...
This release contains...
Documentation can be found at...
To contribute to the project...
ChangeLog
10 December 2010 (Fred Foobar) GlobalFontFamily-devel version 1.4
- fix new build and testing system (bug #123456)
1 August 2008 (Tom Parker) GlobalFontFamily version 1.2.1
- Tweaked the smart font code (Branch merged with trunk version)
- Provided improved build and debugging environment for smart behaviours
7 February 2007 (Pat Johnson) NewWorldFontFamily Version 1.3
- Added Greek and Cyrillic glyphs
7 March 2006 (Fred Foobar) NewWorldFontFamily Version 1.2
- Tweaked contextual behaviours
1 Feb 2005 (Jane Doe) NewWorldFontFamily Version 1.1
- Improved build script performance and verbosity
- Extended the smart code documentation
- Corrected minor typos in the documentation
- Fixed position of combining inverted breve below (U+032F)
- Added OpenType/Graphite smart code for Armenian
- Added Armenian glyphs (U+0531 -> U+0587)
- Released as "NewWorldFontFamily"
1 Jan 2005 (Joe Smith) GlobalFontFamily Version 1.0
- Initial release
Acknowledgements
If you make modifications be sure to add your name (N), email (E), web-address (if you have one) (W) and description (D). This list is in alphabetical order.
N: Jane Doe
E: [email protected]
W: http://art.university.edu/projects/fonts
D: Contributor - Armenian glyphs and code
N: Fred Foobar
E: [email protected]
W: http://foobar.org
D: Contributor - misc Graphite fixes
N: Pat Johnson
E: [email protected]
W: http://pat.fontstudio.org
D: Designer - Greek & Cyrillic glyphs based on Roman design
N: Tom Parker
E: [email protected]
W: http://www.company.com/tom/projects/fonts
D: Engineer - original smart font code
N: Joe Smith
E: [email protected]
W: http://joe.fontstudio.org
D: Designer - original Roman glyphs
Fontstudio.org is an not-for-profit design group whose purpose is...
Foobar.org is a distributed community of developers...
Company.com is a small business who likes to support community designers...
University.edu is a renowned educational institution with a strong design department...
-----
OFL
Copyright 2001-2021 The STIX Fonts Project Authors (https://github.com/stipub/stixfonts), with Reserved Font Name "TM Math". STIX Fonts™ is a trademark of The Institute of Electrical and Electronics Engineers, Inc.
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.
README
Additional documentation for the STIX Fonts will be released
as soon as it is completed.
Please check www.stixfonts.org for the latest information.
STIX_2.0.0_release_notes
STIX Font Release Documentation
OpenType/WOFF/WOFF2
Version 2.0.0
1 December 2016
Updated 19 June 2018
INTRODUCTION
The Scientific and Technical Information eXchange (STIX) fonts are
intended to satisfy the demanding needs of authors, publishers,
printers, and others working in the scientific, medical, and technical
fields. They combine a comprehensive Unicode-based collection of
mathematical symbols and alphabets with a set of text faces suitable
for professional publishing. The fonts are available royalty-free
under the SIL Open Font License.
Version 2.0.0 of the STIX fonts, now known as "STIX Two", is a
thorough revision undertaken by the renowned type house Tiro
Typeworks. The STIX Two fonts consist of four text fonts (Regular,
Italic, Bold, and Bold Italic) and one Math font. Together, they
provide a uniform set of fonts that can be used throughout the
production process, whether that be a traditional print-only process,
an entirely electronic one, or a combination of the two.
The STIX project began through the joint efforts of American
Mathematical Society (AMS), American Institute of Physics (AIP),
American Physical Society (APS), American Chemical Society (ACS),
Institute of Electrical and Electronic Engineers (IEEE), and Elsevier.
These companies are collectively known as the STI Pub companies.
A FRESH TAKE ON TIMES ROMAN
The original version of STIX was based on Times Roman, which has now
been updated for the digital age.
As is well known, Times Roman was originally intended for printing the
London Times. What is not generally appreciated is the fact that the
Times was a very atypically produced newspaper: It was printed on very
high quality paper run through presses that operated more slowly than
most newspaper presses. This allowed for the design of a typeface
that could benefit from this level of printing: serifs could be very
fine (much finer than other newspaper typefaces) and small counters
(enclosed areas) such as in the lowercase e could be much smaller than
in other newspaper typefaces. Another anomaly is that the bold font
for Times Roman is, in many respects, strikingly dissimilar to the
roman font.
Tiro Typeworks explain their approach to updating the Times Roman
basis of STIX as follows:
"Our principal goal in approaching STIX Two was to address several
inherent deficiencies in the Times New Roman model as well as
expand the typographic features. This process necessarily
involved diverging somewhat from Times, given that many features
of that typeface are either incompatible with current printing
methods and electronic reading environments, and some others too
esoteric to repeat. That said, the essential 'Times-ness'
remains, we believe, and such changes won't distract readers and
users in any negative way.
"At the core of Times' problems was inappropriate digitization,
using an optical size model too large to be scaled down to text
sizes, with compensations appropriate to its original purpose and
printing technique, but not for 21st century conditions. We have
also re-thought somewhat overall proportions and spacing, with
changes made in varying degrees to both the Roman and the Italic
(and we have begun to harmonize the Bold, which has always been a
major shortcoming with Times New Roman)."
WHAT IS NEW IN THIS RELEASE?
In addition to the overall visual redesign, STIX Two incorporates a
number of significant improvements and additions. Special attention
has been given to implementing accepted best practices for OpenType
fonts, such as the use of font features to access variant glyph shapes
that were previously only available via the Unicode Private Use Areas.
The letterspacing and kerning of the text fonts have been
significantly improved.
True small capital variants (Latin, Cyrillic, and Greek), accessible
via the OpenType font feature smcp, have been added for all text
fonts.
Text (lowercase or oldstyle) numerals, available via the font features
pnum and onum, have been added, in addition to natural-spacing
figures.
Alphabetic superscripts and numeric sub- and superscripts, accessible
via the subs and sups font features, have been added.
Fractions are available via the frac feature, as well as numerators
(numr) and denominators (dnom).
The OpenType MATH table has been completely rewritten and extended.
Additions have been made to these Unicode blocks:
Latin-1 Supplement U+0080 - U+00FF
Latin Extended-A U+0100 - U+017F
Latin Extended Additional U+0180 - U+024F
Cyrillic U+0400 - U+04FF
Greek and Coptic U+0370 - U+03FF
IPA blocks U+0250 - U+02AF
Full details of included glyphs and supported font features are
available in the included spreadsheet.
BACKWARDS COMPATIBILITY
Because of the scope of the changes, especially to the text fonts,
STIX Two is not a drop-in replacement for earlier versions. While we
understand and sympathize with the difficulties caused by the
incompatibilities we have introduced, we nevertheless felt they were
necessary to address some of the shortcomings of earlier versions of
the fonts and to position us to respond to the needs of modern
publishing.
Earlier versions of the STIX fonts are deprecated and no longer
supported. We urge all users of the STIX fonts to upgrade to the new
versions as soon as possible.
To enable the new and old versions of the fonts to coexist during the
transition phase, the fonts have been renamed as follows:
STIX 1.1.0 STIX 2.0.0
STIX-Regular STIX Two Text
STIX-Italic STIX Two Text Italic
STIX-Bold STIX Two Text Bold
STIX-BoldItalic STIX Two Text Bold Italic
STIX Math Regular STIX Two Math
The four text fonts contain glyphs from Unicode text blocks only. For
example, all characters from the range U+2190 to U+3063 and U+E000 to
U+E368 and all plane 1 characters have been removed from the text
fonts and are now found only in STIX Two Math. Whenever possible,
characters have been removed from the Private Use Area (U+E000-U+F8FF)
and made available via font features instead.
The STIX-General packaging of the fonts is no longer supported.
WHAT IS PROVIDED IN THIS RELEASE?
The contents of this distribution are as follows
OTF/
STIX2Math.otf
STIX2Text-BoldItalic.otf
STIX2Text-Bold.otf
STIX2Text-Italic.otf
STIX2Text-Regular.otf
WOFF/
STIX2Math.woff
STIX2Text-BoldItalic.woff
STIX2Text-Bold.woff
STIX2Text-Italic.woff
STIX2Text-Regular.woff
WOFF2/
STIX2Math.woff2
STIX2Text-BoldItalic.woff2
STIX2Text-Bold.woff2
STIX2Text-Italic.woff2
STIX2Text-Regular.woff2
docs/
STIX_2.0.0_glyph_sets.xlsx
STIX_2.0.0_license.pdf
STIX_2.0.0_release_notes.txt
STIX_2.0.0_stylistic_sets.pdf
charts/
StixTwoMath.pdf
StixTwoRegular.pdf
The font is distributed under the "SIL Open Font License, Version
1.1", a copy of which is included in the License folder.
Support for 8-bit, DVI-based TeX in the form of TFM files and Type 1
fonts is available separately (see below).
We also hope to provide a version of the WOFF fonts broken down into
smaller, more web-download-friendly chunks.
FONT IMPLEMENTATION DECISIONS
The STIX fonts do not contain fixed-width or sans serif text faces.
The sans serif, fraktur, script, etc., alphabets in Plane 1
(U+1D400-U+1D4FF) are intended to be used only as technical symbols.
These fonts are designed to support left-to-right typesetting in
Latin-based scripts, with additional support for Greek and Cyrillic
text. Extensions to support other writing directions have been
considered, but are currently deemed to be outside the scope of the
STIX project.
The font contains:
1. Kerning pairs for characters suitable for use with sizes 8pt
through 12pt.
2. Standard ligature support for those ligatures included in the font.
NOTE TO TEX USERS
If you use XeTeX or LuaTeX, the OTF files are all you need. The fonts
have been tested with both XeTeX and luaTeX with good results. For
best results, XeTeX users will want to upgrade to the latest
development version from
http://xetex.sourceforge.net/
This version fixes a number of bugs that are present in the version
shipped with TeX Live 2016. Our thanks go out to Jonathan Kew and
Khaled Hosny for their generous help in identifying and fixing these
bugs. LaTeX users should also make sure they have the latest version
of the amsmath package available on CTAN.
There are some known issues with kerning of second-order subscripts
that we hope to address in a future release.
For the convenience of users who are restricted to pdfTeX or DVI-based
TeX, a separate implementation set of Type 1 PostScript fonts, TFM
files, and virtual fonts is available from
https://github.com/stipub/stixfonts/tree/master/Type1
Please note that although development work on the OpenType fonts is
ongoing, no further updates are planned to the Type 1 fonts.
FEEDBACK
Please direct any questions or general comments to the STIX Fonts
project. Bug reports and technical support issues should be reported
through https://github.com/stipub/stixfonts.
===========================================================================
APPENDIX
Summary of OpenType Features and Scripts
Full details on all features can be found in the docs folder in
STIX_2.0.0_stylistic_sets.pdf and STIX_2.0.0_glyph_sets.xlsx.
The four text fonts support the following OpenType script tags:
DFLT Default
cyrl Cyrillic
cyrl.MKD Cyrillic/Macedonian
cyrl.SRB Cyrillic/Serbian
grek Greek
latn Latin
latn.ROM Latin/Romanian
latn.TRK Latin/Turkish
and the following OpenType font features:
c2sc Small Capitals From Capitals
case Case-Sensitive Forms
ccmp Glyph Composition/Decomposition
cv01 Character Variants 1 -- lambda with horizontal crossbar (U+019B)
cv02 Character Variants 2 -- serifed ramshorn (U+0264)
dnom Denominators
frac Fractions
kern Kerning
liga Standard Ligatures
numr Numerators
onum Oldstyle Figures
pnum Proportional Figures
smcp Small Capitals
subs Subscript
sups Superscript
The Italic and BoldItalic fonts also support the following feature:
ss01 Stylistic Set 1 -- alternate lowercase g
The following font features are supported by STIX Two Math:
Supported features:
aalt Access All Alternates
ccmp Glyph Composition/Decomposition
cv01 Character Variants 1 -- lambda with horizontal crossbar (U+019B)
cv02 Character Variants 2 -- serifed ramshorn (U+0264)
kern Kerning
ss01 Stylistic Set 1 -- Math chancery to roundhand (\mathcal -> \mathscr)
ss02 Stylistic Set 2 -- Alternate italic forms: g, u, v, w, z
ss03 Stylistic Set 3 -- Horizontal crossbar variants
ss04 Stylistic Set 4 -- Minute, second and primes to long variants
ss05 Stylistic Set 5 -- Short arrow variants
ss06 Stylistic Set 6 -- Short/narrow variants
ss07 Stylistic Set 7 -- Alternate math symbols (product, summation, etc)
ss08 Stylistic Set 8 -- Upright integral variants; XITS compatible
ss09 Stylistic Set 9 -- Vertical slash variants; XITS compatible
ss10 Stylistic Set 10 -- Diagonal greater/lesser combination variants
ss11 Stylistic Set 11 -- Long slash not-equal combination variants
ss12 Stylistic Set 12 -- Low contrast (sans-like) variants
ss13 Stylistic Set 13 -- Horizontally flipped sine wave glyph
ss14 Stylistic Set 14 -- Tall variants
ss15 Stylistic Set 15 -- Slab serif symbol variants
ss16 Stylistic Set 16 -- Circled operator variants
ss20 Stylistic Set 20 -- Miscellaneous variants
STIX_2.0.1_release_notes
STIX Font Release Documentation
OpenType/WOFF/WOFF2
https://www.stixfonts.org/
Version 2.0.1
15 April 2019
WHAT IS PROVIDED IN THIS RELEASE?
The contents of this distribution are
Fonts/
OTF/
STIX2Math.otf
STIX2Text-BoldItalic.otf
STIX2Text-Bold.otf
STIX2Text-Italic.otf
STIX2Text-Regular.otf
WOFF/
STIX2Math.woff
STIX2Text-BoldItalic.woff
STIX2Text-Bold.woff
STIX2Text-Italic.woff
STIX2Text-Regular.woff
WOFF2/
STIX2Math.woff2
STIX2Text-BoldItalic.woff2
STIX2Text-Bold.woff2
STIX2Text-Italic.woff2
STIX2Text-Regular.woff2
docs/
STIX_2.0.1_license.pdf
STIX_2.0.1_release_notes.txt
charts/
StixTwoBold.pdf
StixTwoBoldItalic.pdf
StixTwoItalic.pdf
StixTwoMath.pdf
StixTwoRegular.pdf
The STIX font is distributed under the SIL Open Font License, Version
1.1, a copy of which is included in the docs folder.
FEEDBACK
Please direct any questions or general comments to the STIX Fonts
project. Bug reports and technical support issues should be submitted
through
https://github.com/stipub/stixfonts
where you can also find a list of known issues.
WHAT'S NEW IN 2.0.1?
COMPATIBILITY BETWEEN 2.0.1 AND 2.0.0
There have been numerous improvements to the design of individual
glyphs and to the placement of various accents. Since these don't
affect character metrics, they should not affect the layout of
documents that used v2.0.0 of the fonts.
Users upgrading existing documents from 2.0.0 to 2.0.1 should be aware
of the following potential incompatibilities:
* Character metrics for some glyphs, especially Mathematical
Alphanumeric Symbols and APL functional symbols, have changed.
* Kerning between z and following punctuation has been improved.
* In STIX2Math, Stylistic Set 7 (ss07) no longer includes U+2205
* U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD PARTIAL
DIFFERENTIAL are now upright by default.
See below for further details.
TEXT FONTS
* Added U+2423 OPEN BOX to all faces.
* Added Stylistic Set ss02 to select upright parentheses, brackets,
and braces in Italic and BoldItalic faces.
* Harmonized design of smallcap U+02A9 LATIN SMALL LETTER FENG DIGRAPH
between Regular and Bold faces.
* Improved design of extended Latin and IPA character glyphs.
* Improved kerning of selected character pairs.
* Improved design and placement of U+0307 COMBINING DOT ABOVE and
U+0308 COMBINING DIAERESIS.
MATH FONTS
* The following Mathematical Alphanumeric Symbols have been improved.
Note that in some case this has necessitated changes to the
character metrics.
U+1D504..1D537 Fraktur symbols
U+1D538..1D56B Double-struck symbols
U+1D56C..1D59F Bold Fraktur symbols
U+1D5A0..1D5D3 Sans-serif symbols [SSP]
U+1D5D4..1D607 Sans-serif bold symbols [SSP]
U+1D608..1D63B Sans-serif italic symbols [SSP]
U+1D63C..1D66F Sans-serif bold italic symbols [SSP]
U+1D670..1D6A3 Monospace symbols
U+1D756..1D78F Sans-serif bold Greek
U+1D790..1D7C9 Sans-serif bold italic Greek
U+1D7D8..1D7E1 Double-struck digits
U+1D7E2..1D7EB Sans-serif digits [SSP]
U+1D7EC..1D7F5 Sans-serif bold digits [SSP]
U+1D7F6..1D7FF Monospace digits
Note: The ranges marked "[SSP]" are derived from the Source Sans Pro
fonts, with proportions and weight modified to harmonize with the
STIX design.
* Added support for Unicode Standard Mathematical Standardized Variants.
* Removed variant form of U+2205 EMPTY SET from Stylistic Set 7 to
Character Variant 3. NOTE: For most users, the "variant" form will
be the preferred shape, but the default shape has been left as-is
for backwards compatibility.
* Improved proportions of existing APL symbols and added an additional
16 symbols (see below).
* Corrected glyph for U+1D752 MATHEMATICAL BOLD ITALIC KAPPA SYMBOL.
* Improved positioning of tilde math accent.
* Added dotless variants of U+2148 DOUBLE-STRUCK ITALIC SMALL I and
U_2149 DOUBLE-STRUCK ITALIC SMALL J.
* Made U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD
PARTIAL DIFFERENTIAL upright rather than italic.
* Revised and extended coverage of Enclosed Alphanumeric block
(U+2460-24FF).
* U+20E1 COMBINING LEFT RIGHT ARROW ABOVE is now extensible.
* Corrected vertical placement of U+00B1 PLUS-MINUS SIGN
* The following delimiters now have a full set of 12 growing form
variants.
U+2308 LEFT CEILING
U+2309 RIGHT CEILING
U+230A LEFT FLOOR
U+230B RIGHT FLOOR
U+2772 LIGHT LEFT TORTOISE SHELL BRACKET ORNAMENT
U+2773 LIGHT RIGHT TORTOISE SHELL BRACKET ORNAMENT
U+27E6 LEFT WHITE SQUARE BRACKET
U+27E7 MATHEMATICAL RIGHT WHITE SQUARE BRACKET
U+27E8 MATHEMATICAL LEFT ANGLE BRACKET
U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET
U+27EA MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
U+27EB MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
U+2983 WHITE CURLY BRACKET
U+2984 RIGHT WHITE CURLY BRACKET
U+2985 LEFT WHITE PARENTHESIS
U+2986 RIGHT WHITE PARENTHESIS
* New characters
General Punctuation
U+2061 FUNCTION APPLICATION
U+2062 INVISIBLE TIMES
U+2063 INVISIBLE SEPARATOR
U+2064 INVISIBLE PLUS
Miscellaneous Technical
U+2338 APL FUNCTIONAL SYMBOL QUAD EQUAL
U+233A APL FUNCTIONAL SYMBOL QUAD DIAMOND
U+233E APL FUNCTIONAL SYMBOL CIRCLE JOT
U+2341 APL FUNCTIONAL SYMBOL QUAD SLASH
U+2342 APL FUNCTIONAL SYMBOL QUAD BACKSLASH
U+2347 APL FUNCTIONAL SYMBOL QUAD LEFTWARDS ARROW
U+2348 APL FUNCTIONAL SYMBOL QUAD RIGHTWARDS ARROW
U+2350 APL FUNCTIONAL SYMBOL QUAD UPWARDS ARROW
U+2357 APL FUNCTIONAL SYMBOL QUAD DOWNWARDS ARROW
U+2360 APL FUNCTIONAL SYMBOL QUAD COLON
U+2364 APL FUNCTIONAL SYMBOL JOT DIAERESIS
U+2365 APL FUNCTIONAL SYMBOL CIRCLE DIAERESIS
U+2366 APL FUNCTIONAL SYMBOL DOWN SHOE STILE
U+236D APL FUNCTIONAL SYMBOL STILE TILDE
U+2378 APL FUNCTIONAL SYMBOL IOTA UNDERBAR
U+2395 APL FUNCTIONAL SYMBOL QUAD
U+23B7 RADICAL SYMBOL BOTTOM
U+23B8 LEFT VERTICAL BOX LINE
U+23B9 RIGHT VERTICAL BOX LINE
Control Pictures
U+2422 BLANK SYMBOL
Enclosed Alphanumerics
U+2469..24B5
U+24EB..24FF
Dingbats
U+2776 DINGBAT NEGATIVE CIRCLED DIGIT ONE
U+2777 DINGBAT NEGATIVE CIRCLED DIGIT TWO
U+2778 DINGBAT NEGATIVE CIRCLED DIGIT THREE
U+2779 DINGBAT NEGATIVE CIRCLED DIGIT FOUR
U+277A DINGBAT NEGATIVE CIRCLED DIGIT FIVE
U+277B DINGBAT NEGATIVE CIRCLED DIGIT SIX
U+277C DINGBAT NEGATIVE CIRCLED DIGIT SEVEN
U+277D DINGBAT NEGATIVE CIRCLED DIGIT EIGHT
U+277E DINGBAT NEGATIVE CIRCLED DIGIT NINE
U+277F DINGBAT NEGATIVE CIRCLED NUMBER TEN
Arabic Mathematical Alphabetic Symbols
U+1EEF0 ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL
U+1EEF1 ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
Note: These two characters were added for compatibility with
the LaTeX unicode-math package. There are no plans to include
further support for Arabic typesetting.
WHAT'S NEW IN 2.0.0?
In addition to the overall visual redesign, STIX Two incorporates a
number of significant improvements and additions. Special attention
has been given to implementing accepted best practices for OpenType
fonts, such as the use of font features to access variant glyph shapes
that were previously only available via the Unicode Private Use Areas.
The letterspacing and kerning of the text fonts have been
significantly improved.
True small capital variants (Latin, Cyrillic, and Greek), accessible
via the OpenType font feature smcp, have been added for all text
fonts.
Text (lowercase or oldstyle) numerals, available via the font features
pnum and onum, have been added, in addition to natural-spacing
figures.
Alphabetic superscripts and numeric sub- and superscripts, accessible
via the subs and sups font features, have been added.
Fractions are available via the frac feature, as well as numerators
(numr) and denominators (dnom).
The OpenType MATH table has been completely rewritten and extended.
Additions have been made to these Unicode blocks:
Latin-1 Supplement U+0080 - U+00FF
Latin Extended-A U+0100 - U+017F
Latin Extended Additional U+0180 - U+024F
Cyrillic U+0400 - U+04FF
Greek and Coptic U+0370 - U+03FF
IPA blocks U+0250 - U+02AF
BACKWARDS COMPATIBILITY
Because of the scope of the changes, especially to the text fonts,
STIX Two is not a drop-in replacement for earlier versions. While we
understand and sympathize with the difficulties caused by the
incompatibilities we have introduced, we nevertheless felt they were
necessary to address some of the shortcomings of earlier versions of
the fonts and to position us to respond to the needs of modern
publishing.
Earlier versions of the STIX fonts are deprecated and no longer
supported. We urge all users of the STIX fonts to upgrade to the new
versions as soon as possible.
To enable the new and old versions of the fonts to coexist during the
transition phase, the fonts have been renamed as follows:
STIX 1.1.0 STIX 2.0.0
STIX-Regular STIX Two Text
STIX-Italic STIX Two Text Italic
STIX-Bold STIX Two Text Bold
STIX-BoldItalic STIX Two Text Bold Italic
STIX Math Regular STIX Two Math
The four text fonts contain glyphs from Unicode text blocks only. For
example, all characters from the range U+2190 to U+3063 and U+E000 to
U+E368 and all plane 1 characters have been removed from the text
fonts and are now found only in STIX Two Math. Whenever possible,
characters have been removed from the Private Use Area (U+E000-U+F8FF)
and made available via font features instead.
The STIX-General packaging of the fonts is no longer supported.
STIX_2.0.2_release_notes
STIX Font Release Documentation
OpenType/WOFF/WOFF2
https://www.stixfonts.org/
Version 2.0.2
18 June 2019
WHAT IS PROVIDED IN THIS RELEASE?
The contents of this distribution are
Fonts/
OTF/
STIX2Math.otf
STIX2Text-BoldItalic.otf
STIX2Text-Bold.otf
STIX2Text-Italic.otf
STIX2Text-Regular.otf
WOFF/
STIX2Math.woff
STIX2Text-BoldItalic.woff
STIX2Text-Bold.woff
STIX2Text-Italic.woff
STIX2Text-Regular.woff
WOFF2/
STIX2Math.woff2
STIX2Text-BoldItalic.woff2
STIX2Text-Bold.woff2
STIX2Text-Italic.woff2
STIX2Text-Regular.woff2
docs/
STIX_2.0.2_license.pdf
STIX_2.0.2_release_notes.txt
charts/
StixTwoBold.pdf
StixTwoBoldItalic.pdf
StixTwoItalic.pdf
StixTwoMath.pdf
StixTwoRegular.pdf
The STIX font is distributed under the SIL Open Font License, Version
1.1, a copy of which is included in the docs folder.
FEEDBACK
Please direct any questions or general comments to the STIX Fonts
project. Bug reports and technical support issues should be submitted
through
https://github.com/stipub/stixfonts
where you can also find a list of known issues.
WHAT'S NEW IN 2.0.2?
This release fixes a glitch in the OS/2 tables: Bit 8 (WWS) of the
fsSelection field has been set and the OS/2 table version has been
updated to 4. No changes were made to any glyphs or metrics.
WHAT'S NEW IN 2.0.1?
COMPATIBILITY BETWEEN 2.0.1 AND 2.0.0
There have been numerous improvements to the design of individual
glyphs and to the placement of various accents. Since these don't
affect character metrics, they should not affect the layout of
documents that used v2.0.0 of the fonts.
Users upgrading existing documents from 2.0.0 to 2.0.1 should be aware
of the following potential incompatibilities:
* Character metrics for some glyphs, especially Mathematical
Alphanumeric Symbols and APL functional symbols, have changed.
* Kerning between z and following punctuation has been improved.
* In STIX2Math, Stylistic Set 7 (ss07) no longer includes U+2205
* U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD PARTIAL
DIFFERENTIAL are now upright by default.
See below for further details.
TEXT FONTS
* Added U+2423 OPEN BOX to all faces.
* Added Stylistic Set ss02 to select upright parentheses, brackets,
and braces in Italic and BoldItalic faces.
* Harmonized design of smallcap U+02A9 LATIN SMALL LETTER FENG DIGRAPH
between Regular and Bold faces.
* Improved design of extended Latin and IPA character glyphs.
* Improved kerning of selected character pairs.
* Improved design and placement of U+0307 COMBINING DOT ABOVE and
U+0308 COMBINING DIAERESIS.
MATH FONTS
* The following Mathematical Alphanumeric Symbols have been improved.
Note that in some case this has necessitated changes to the
character metrics.
U+1D504..1D537 Fraktur symbols
U+1D538..1D56B Double-struck symbols
U+1D56C..1D59F Bold Fraktur symbols
U+1D5A0..1D5D3 Sans-serif symbols [SSP]
U+1D5D4..1D607 Sans-serif bold symbols [SSP]
U+1D608..1D63B Sans-serif italic symbols [SSP]
U+1D63C..1D66F Sans-serif bold italic symbols [SSP]
U+1D670..1D6A3 Monospace symbols
U+1D756..1D78F Sans-serif bold Greek
U+1D790..1D7C9 Sans-serif bold italic Greek
U+1D7D8..1D7E1 Double-struck digits
U+1D7E2..1D7EB Sans-serif digits [SSP]
U+1D7EC..1D7F5 Sans-serif bold digits [SSP]
U+1D7F6..1D7FF Monospace digits
Note: The ranges marked "[SSP]" are derived from the Source Sans Pro
fonts, with proportions and weight modified to harmonize with the
STIX design.
* Added support for Unicode Standard Mathematical Standardized Variants.
* Removed variant form of U+2205 EMPTY SET from Stylistic Set 7 to
Character Variant 3. NOTE: For most users, the "variant" form will
be the preferred shape, but the default shape has been left as-is
for backwards compatibility.
* Improved proportions of existing APL symbols and added an additional
16 symbols (see below).
* Corrected glyph for U+1D752 MATHEMATICAL BOLD ITALIC KAPPA SYMBOL.
* Improved positioning of tilde math accent.
* Added dotless variants of U+2148 DOUBLE-STRUCK ITALIC SMALL I and
U_2149 DOUBLE-STRUCK ITALIC SMALL J.
* Made U+2202 PARTIAL DIFFERENTIAL and U+1D6DB MATHEMATICAL BOLD
PARTIAL DIFFERENTIAL upright rather than italic.
* Revised and extended coverage of Enclosed Alphanumeric block
(U+2460-24FF).
* U+20E1 COMBINING LEFT RIGHT ARROW ABOVE is now extensible.
* Corrected vertical placement of U+00B1 PLUS-MINUS SIGN
* The following delimiters now have a full set of 12 growing form
variants.
U+2308 LEFT CEILING
U+2309 RIGHT CEILING
U+230A LEFT FLOOR
U+230B RIGHT FLOOR
U+2772 LIGHT LEFT TORTOISE SHELL BRACKET ORNAMENT
U+2773 LIGHT RIGHT TORTOISE SHELL BRACKET ORNAMENT
U+27E6 LEFT WHITE SQUARE BRACKET
U+27E7 MATHEMATICAL RIGHT WHITE SQUARE BRACKET
U+27E8 MATHEMATICAL LEFT ANGLE BRACKET
U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET
U+27EA MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
U+27EB MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
U+2983 WHITE CURLY BRACKET
U+2984 RIGHT WHITE CURLY BRACKET
U+2985 LEFT WHITE PARENTHESIS
U+2986 RIGHT WHITE PARENTHESIS
* New characters
General Punctuation
U+2061 FUNCTION APPLICATION
U+2062 INVISIBLE TIMES
U+2063 INVISIBLE SEPARATOR
U+2064 INVISIBLE PLUS
Miscellaneous Technical
U+2338 APL FUNCTIONAL SYMBOL QUAD EQUAL
U+233A APL FUNCTIONAL SYMBOL QUAD DIAMOND
U+233E APL FUNCTIONAL SYMBOL CIRCLE JOT
U+2341 APL FUNCTIONAL SYMBOL QUAD SLASH
U+2342 APL FUNCTIONAL SYMBOL QUAD BACKSLASH
U+2347 APL FUNCTIONAL SYMBOL QUAD LEFTWARDS ARROW
U+2348 APL FUNCTIONAL SYMBOL QUAD RIGHTWARDS ARROW
U+2350 APL FUNCTIONAL SYMBOL QUAD UPWARDS ARROW
U+2357 APL FUNCTIONAL SYMBOL QUAD DOWNWARDS ARROW
U+2360 APL FUNCTIONAL SYMBOL QUAD COLON
U+2364 APL FUNCTIONAL SYMBOL JOT DIAERESIS
U+2365 APL FUNCTIONAL SYMBOL CIRCLE DIAERESIS
U+2366 APL FUNCTIONAL SYMBOL DOWN SHOE STILE
U+236D APL FUNCTIONAL SYMBOL STILE TILDE
U+2378 APL FUNCTIONAL SYMBOL IOTA UNDERBAR
U+2395 APL FUNCTIONAL SYMBOL QUAD
U+23B7 RADICAL SYMBOL BOTTOM
U+23B8 LEFT VERTICAL BOX LINE
U+23B9 RIGHT VERTICAL BOX LINE
Control Pictures
U+2422 BLANK SYMBOL
Enclosed Alphanumerics
U+2469..24B5
U+24EB..24FF
Dingbats
U+2776 DINGBAT NEGATIVE CIRCLED DIGIT ONE
U+2777 DINGBAT NEGATIVE CIRCLED DIGIT TWO
U+2778 DINGBAT NEGATIVE CIRCLED DIGIT THREE
U+2779 DINGBAT NEGATIVE CIRCLED DIGIT FOUR
U+277A DINGBAT NEGATIVE CIRCLED DIGIT FIVE
U+277B DINGBAT NEGATIVE CIRCLED DIGIT SIX
U+277C DINGBAT NEGATIVE CIRCLED DIGIT SEVEN
U+277D DINGBAT NEGATIVE CIRCLED DIGIT EIGHT
U+277E DINGBAT NEGATIVE CIRCLED DIGIT NINE
U+277F DINGBAT NEGATIVE CIRCLED NUMBER TEN
Arabic Mathematical Alphabetic Symbols
U+1EEF0 ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL
U+1EEF1 ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
Note: These two characters were added for compatibility with
the LaTeX unicode-math package. There are no plans to include
further support for Arabic typesetting.
WHAT'S NEW IN 2.0.0?
In addition to the overall visual redesign, STIX Two incorporates a
number of significant improvements and additions. Special attention
has been given to implementing accepted best practices for OpenType
fonts, such as the use of font features to access variant glyph shapes
that were previously only available via the Unicode Private Use Areas.
The letterspacing and kerning of the text fonts have been
significantly improved.
True small capital variants (Latin, Cyrillic, and Greek), accessible
via the OpenType font feature smcp, have been added for all text
fonts.
Text (lowercase or oldstyle) numerals, available via the font features
pnum and onum, have been added, in addition to natural-spacing
figures.
Alphabetic superscripts and numeric sub- and superscripts, accessible
via the subs and sups font features, have been added.
Fractions are available via the frac feature, as well as numerators
(numr) and denominators (dnom).
The OpenType MATH table has been completely rewritten and extended.
Additions have been made to these Unicode blocks:
Latin-1 Supplement U+0080 - U+00FF
Latin Extended-A U+0100 - U+017F
Latin Extended Additional U+0180 - U+024F
Cyrillic U+0400 - U+04FF
Greek and Coptic U+0370 - U+03FF
IPA blocks U+0250 - U+02AF
BACKWARDS COMPATIBILITY
Because of the scope of the changes, especially to the text fonts,
STIX Two is not a drop-in replacement for earlier versions. While we
understand and sympathize with the difficulties caused by the
incompatibilities we have introduced, we nevertheless felt they were
necessary to address some of the shortcomings of earlier versions of
the fonts and to position us to respond to the needs of modern
publishing.
Earlier versions of the STIX fonts are deprecated and no longer
supported. We urge all users of the STIX fonts to upgrade to the new
versions as soon as possible.
To enable the new and old versions of the fonts to coexist during the
transition phase, the fonts have been renamed as follows:
STIX 1.1.0 STIX 2.0.0
STIX-Regular STIX Two Text
STIX-Italic STIX Two Text Italic
STIX-Bold STIX Two Text Bold
STIX-BoldItalic STIX Two Text Bold Italic
STIX Math Regular STIX Two Math
The four text fonts contain glyphs from Unicode text blocks only. For
example, all characters from the range U+2190 to U+3063 and U+E000 to
U+E368 and all plane 1 characters have been removed from the text
fonts and are now found only in STIX Two Math. Whenever possible,
characters have been removed from the Private Use Area (U+E000-U+F8FF)
and made available via font features instead.
The STIX-General packaging of the fonts is no longer supported.
STIX_Font_License_2010
STIX Font License
24 May 2010
Copyright (c) 2001-2010 by the STI Pub Companies, consisting of the American
Institute of Physics, the American Chemical Society, the American Mathematical
Society, the American Physical Society, Elsevier, Inc., and The Institute of
Electrical and Electronic Engineers, Inc. (www.stixfonts.org), with Reserved
Font Name STIX Fonts, STIX Fonts (TM) is a trademark of The Institute of
Electrical and Electronics Engineers, Inc.
Portions copyright (c) 1998-2003 by MicroPress, Inc. (www.micropress-inc.com),
with Reserved Font Name TM Math. To obtain additional mathematical fonts, please
contact MicroPress, Inc., 68-30 Harrow Street, Forest Hills, NY 11375, USA,
Phone: (718) 575-1816.
Portions copyright (c) 1990 by Elsevier, Inc.
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.
TRADEMARKS
STIX Fonts™ is a trademark of The Institute of Electrical and Electronics Engineers, Inc.
THIS IS COMPLETELY A RIPOFF OF TIMES NEW ROMAN!!! >8(
Reply