FontFont OpenType User Guide Font Open Type
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FontFont%20OpenType%20User%20Guide
FontFont%20OpenType%20User%20Guide
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version 05 | April 2012
fontfont opentype® user guide
sections
a |
Introduction to OpenType®
b |
FontFont OpenType Categories
c |
Language Support
d |
Layout Features
section a
INTRODUCTION
TO OPENTYPE®
what is
opentype?
OpenType is the most modern font file format. The two main benefits of
the OpenType format are its cross-platform compatibility – you can work
with the same font file on Mac®, Windows® or other computers – and its
ability to support widely expanded character sets and layout features
which provide rich linguistic support and advanced typographic control.
Each OpenType FontFont is accompanied by a font-specific FF Info Guide
listing all the layout features and languages supported by that particular
font. The font and FF Info Guide will be delivered as a compressed zip file.
This document covers the basics of the OpenType format. Section C
explains the language support of OpenType fonts. In Section D you will
find a glossary of all OpenType layout features that may be supported by
FontFonts.
If you look for information about layout features and language support of
a specific OpenType FontFont please read the comprehensive font-specific
FF Info Guide for that font.
© 2005 — 2012 FSI FontShop International. All rights reserved.
All information in this document is provided ‘as is’ without warranty of any kind, either expressed or implied, and is subject to
change without notice.
All trademarks mentioned in this document are the trademarks
or registered trademarks of their respective holders. Mac and
Mac OS are trademarks of Apple Inc., registered in the U.S. and
other countries.
You may reproduce and distribute this document as long as you
do not remove FSI’s copyright information and do not make any
changes in the document.
Text typeface: FF Unit
a|1
FONTFONT OPENTYPE USER GUIDE
section a
INTRODUCTION
TO OPENTYPE®
cross-platform
compatibility
By using one font file only for its entire glyph, metric and bitmap data,
OpenType fonts simplify font management. The same file works on Mac,
Windows and other operating systems so you can move font files between
platforms for the use in any documents that use type.
language support
OpenType fonts are based on the Unicode Standard, a multi-byte character encoding that covers nearly all the world’s languages. With OpenType
it is possible to include multiple language character sets in one font, thus
simplifying multilingual text processing. Section C lists all code pages
and languages that may be supported by OpenType FontFonts. For information about language support of a specific OpenType FontFont please
refer to the respective font-specific FF Info Guide.
layout features
Traditional PostScript® fonts are limited to 256 glyphs, forcing the user to
install and manage two or more style-related fonts in order to access additional characters. OpenType fonts can contain more than 65 000 glyphs
in one cross-platform font file, making font management and publishing
workflows much easier and more flexible.
A single font file may contain many non-standard glyphs, such as old-style
figures, tabular figures, small capitals, fractions, swashes, superiors,
inferiors, titling letters, contextual and stylistic alternates, a full range
of ligatures, symbols and ornaments. The OpenType layout features
allow automatic positioning or substitution of glyphs. Section D lists
and describes the layout features that may be supported by OpenType
FontFonts.
use of
opentype fonts
a|2
The installation of OpenType fonts is similar to other font formats. Please
refer to your operating system manual. OpenType-savvy applications
provide a user interface that allows applying OpenType layout features to
text. Applications that don’t support OpenType layout features can still
access the full range of encoded characters and symbols in OpenType
fonts if application and operating system support Unicode (e. g. Windows
2000, XP, Vista®, 7; Mac OS® X). When using non-Unicode-savvy operating systems or applications only the first 256 characters in the font may
be accessed.
FONTFONT OPENTYPE USER GUIDE
section b
FONTFONT
OPENTYPE
CATEGORIES
FontFont OpenType
Categories
Even though the OpenType format is cross-platform compatible, there are differences in the way how operating systems and applications handle the various
characteristics of OpenType fonts. For this reason, FSI has started to offer different kinds of OpenType fonts:
PostScript-flavoured OpenType fonts with file extension .otf (OT Standard and
OT Pro), OT fonts for short, are optimized for users who work with desktop
publishing software such as InDesign® or QuarkXPress®.
TrueType-flavoured OpenType fonts with file extension .ttf (Offc Standard and
Offc Pro) are optimized for most office applications, such as Microsoft® Word,
Powerpoint® or OpenOffice.
Web FontFonts are based on TrueType-flavoured OpenType fonts which are
‘wrapped’ into a Web Open Font Format (WOFF) or Embedded OpenType® (EOT)
file. Two different webfont formats are necessary because of varying browser
support.
Please see next page for a detailed description of the current FontFont OpenType categories.
b |3
FONTFONT OPENTYPE USER GUIDE
section b
FONTFONT
OPENTYPE
CATEGORIES
.
,
OpenType CFF Standard and Pro.
These fonts allow advanced typographic control through special layout features
like automatic contextual ligatures, Small Caps and alternate glyphs. The
outline format is CFF (Compact Font Format), i. e. the fonts are PostScriptflavoured.
OT Standard fonts have at least the character sets for 58 Western languages
such as English, French and Spanish, while OT Pro fonts support at least 36
more Latin-based languages (e. g. Czech, Turkish, Latvian). Many OT Pro fonts
also contain Greek or Cyrillic. OT Standard and Pro fonts are style-linked by
their family names.
)
(
OpenType TTF Offc Standard and Pro.
These fonts don’t contain any layout features and are TrueType-flavoured to
comply with most Office applications. Offc Basic Sets consist of four style-linked
Regular, Italic, Bold and Bold Italic fonts. Styles outside these Basic Sets are
linked to their italic counterparts, e. g. Light to Light Italic. The default figure
set is Tabular Figures (TF). Small Caps with Oldstyle Figures (OsF) are available
as separate fonts.
Offc Standard fonts have at least the character sets for 58 Western languages
such as English, French and Spanish, while Offc Pro fonts support at least 36
more Latin-based languages (e. g. Czech, Turkish, Latvian). Many Offc Pro fonts
also contain Greek or Cyrillic.
[
]
Opentype TTF Web Standard and Pro.
Web FontFonts are based on TrueType-flavoured OpenType fonts and are
delivered in two different formats, Web Open Font Format (WOFF) and Embedded
OpenType (EOT) because of varying web browser support. Their default figure
set is Tabular Figures (TF). Small Caps with Oldstyle Figures (OsF) are available
as separate fonts.
Web Standard fonts have at least the character sets for 58 Western languages
such as English, French and Spanish, while Web Pro fonts support at least 36
more Latin-based languages (e. g. Czech, Turkish, Latvian). Many Web Pro fonts
also contain Greek or Cyrillic.
b |4
FONTFONT OPENTYPE USER GUIDE
section b
FONTFONT
OPENTYPE
CATEGORIES
a
OpenType CFF Arabic.
These fonts allow advanced typographic control through special layout features
like automatic contextual ligatures, Small Caps and alternate glyphs. The
outline format is CFF (Compact Font Format), i. e. the fonts are PostScriptflavoured.
OT Arabic fonts have the character sets for the non-Latin script systems Arabic,
Persian and Urdu and for Western languages such as English, French and Spanish. They contain all OpenType layout features necessary for Arabic typesetting.
j
OpenType CFF Hebrew.
These fonts allow advanced typographic control through special layout features
like automatic contextual ligatures, Small Caps and alternate glyphs. The
outline format is CFF (Compact Font Format), i. e. the fonts are PostScriptflavoured.
OT Hebrew fonts have the character sets for the Hebrew script as well as for
Latin Western languages such as English, French and Spanish. They contain all
OpenType layout features necessary for Hebrew typesetting.
b |5
FONTFONT OPENTYPE USER GUIDE
section c
LANGUAGE
SUPPORT
accessing extended
characters
Applications and operating systems that make use of the Unicode Standard for
text processing can provide easy access to the wide range of encoded accented
characters and special symbols in OpenType fonts, thus greatly simplifying
multilingual typesetting. All OpenType FontFonts have at least the character
sets of the code pages MS Windows 1252 and Mac OS Roman.
All Unicode-encoded glyphs in an OpenType font will show up in the Windows
Character Map accessory, allowing direct copying and pasting of any OpenType
glyph into any application that supports Unicode. On Mac OS X the Character Palette offers a similar function. OS X users may also install and select a
Unicode keyboard layout that allows direct access to any Unicode character in
most Unicode-supporting applications.
w
c
e
g
h
k
m
a
j
c|6
The font has support for the FontFont Western encoding (all OpenType FontFonts do, the icon may be omitted).
Support for FontFont CE encoding (including the former Central European,
Baltic and Turkish encodings).
Support for FontFont Latin Extended encoding.
Support for FontFont Greek encoding.
Support for FontFont Greek Polytonic encoding.
Support for FontFont Cyrillic encoding.
Support for FontFont Cyrillic Extended encoding.
Support for FontFont Arabic encoding.
Support for FontFont Hebrew encoding.
FONTFONT OPENTYPE USER GUIDE
section c
LANGUAGE
SUPPORT
supported
code pages
w
standard
windows
ms windows 1252 western
mac
mac os roman
iso
iso 8859–1 latin 1 western
iso 8859–15 west europe latin 9
ibm
ibm 037 united states – ebcdic (ibm 28709)
ibm 273 germany – ebcdic
additional
supported
code pages
c
.)[aj
ibm 277 denmark, norway – ebcdic
ibm 278 finland, sweden – ebcdic
ibm 280 italy – ebcdic
ibm 282
ibm 284 spain, latin america – ebcdic
ibm 285 united kingdom – ebcdic
ibm 297 france – ebcdic
ibm 500 international – ebcdic
ibm 871 iceland – ebcdic
ibm 1047 open systems - ebcdic
pro
,(]
windows
iso
ms windows 1250 eastern european
ms windows 1254 turkish
ms windows 1257 baltic
mac
iso 8859-3 tu, malt, gal, esp, latin 3
iso 8859-9 w eu+turkish latin 5
iso 8859-13 baltic latin 7
iso 8859-16 southeast europe latin 10
mac os central europe
mac os croatian
mac os romanian
mac os turkish
ibm 921 baltic
ibm 922 estonia
ibm 1112 baltic - ebcdic
iso
ibm
iso 8859-2 c eu latin 2
e
g
k
c|7
iso
iso 8859–4 baltic latin 6
iso 8859-10 scandinavian latin 6
windows
iso
ms windows 1253 greek
iso 8859-7 greek
mac os greek
ibm 875 greece ebcdic
windows
iso
ms windows 1251 cyrillic
iso 8859-5 cyrillic
mac os cyrillic
mac os ukraine
ibm 1025 cyrillic - ebcdic
ibm 1123
ibm 1124
mac
mac
FONTFONT OPENTYPE USER GUIDE
ibm
ibm
section c
LANGUAGE
SUPPORT
supported
languages
w
c|8
standard
afrikaans
albanian
arvanitika (latin)
asturian
Baraba Tatar
Bislama
breton
catalan
Chamorro
danish
dutch
english
Estonian
Faeroese
finnish
Franco-Provençal
french
Frisian
frisian, east
frisian, north
Frisian, west
Friulian
gaelic, scottish
Galician
german
Greenlandic
icelandic
indonesian
interlingua
irish
italian
FONTFONT OPENTYPE USER GUIDE
.)[aj
karaim (latin)
kazan tatar (latin)
kurdish (latin)
ladin
low german
Luxembourgian
malagasy
malay (latin)
Manx Gaelic
norwegian
Occitan
portuguese
rhaeto-romance
Romansch
Sami, southern
sami, ume
somali
sotho, northern
sotho, southern
spanish
swedish
tagalog
tahitian
tsakhur (latin)
tsonga
tswana
Walloon
xhosa
yapese
zulu
section c
LANGUAGE
SUPPORT
pro
additional
supported
languages
,(]
arumanian
Basque
Bosnian (Latin)
belarusian (latin)
cook islands maori
Crimean Tatar (Latin)
Croatian
Czech
Esperanto
gagauz (latin)
hawaiian
Hungarian
istro-romanian
Kashubian
kurmanji
Latvian
Lithuanian
Maltese
maori
marshallese
Moldavian (latin)
Polish
Romanian
sami, inari
Sami, lule
samoan
Serbian (Latin)
Slovak
Slovenian
Sorbian, Lower
sorbian, upper
tongan
Turkish
Ubykh
Våmhusmål
vepsian
wallisian
e
aragonese
azerbaijani (latin)
chechen (latin)
chichewa
greenlandic (pre-1973)
Ladino (latin)
latin
portunhol
romani (latin)
sami, northern
sardinian
welsh
wolof
g
h
greek monotonic
tsakonian monotonic
arvanitika (greek)
c
c|9
greek Polytonic
FONTFONT OPENTYPE USER GUIDE
section c
LANGUAGE
SUPPORT
k
abaza
Balk
bosnian (cyrillic)
Bulgarian
belarusian (cyrillic)
Erzya
Karachay-Balkar
Karaim (cyrillic)
Kazan Tatar (cyrillic)
Kumyk
Kurdish (cyrillic)
Macedonian
Moksha
nanai
Nogay
russian
rusyn
ukrainian
m
adyghe
archi
avar
botlikh
budukh
buryat
chechen (cyrillic)
dargin
dungan
ingush
kabardian
kalmyk
kara-kalpak
kazakh
khinalug
kryts
lak
lezgi
mongolian (cyrillic)
rutul
tabasaran
tajik
tatar
tati
tsakhur (cyrillic)
turkmen
tuvinian
uzbek
a
j
arabic
persian
urdu
c | 10
hebrew
FONTFONT OPENTYPE USER GUIDE
section d
LAYOUT
FEATURES
OpenType layout features can be used to automatically position or substitute glyphs for more typographic flexibility. Glyphs are the specific visual
forms or shapes that characters can take. Characters are the code points
assigned by the Unicode Standard which represent the smallest semantic
unit of languages, such as letters. One character may correspond to
several glyphs: the lowercase ‘a’, a small capital ‘a’ and an alternate
lowercase ‘a’ are all the same character but three different glyphs. In case
of ligatures one glyph may also represent more than one character, for
instance the ‘ffi’ ligature is one glyph but corresponds to three characters: ‘f’, ‘f’ and ‘i’.
For any given character there is a default glyph and positioning behaviour. By applying OpenType layout features to one or more characters you
can change the positioning or substitute glyphs. For example, the application of the Small Capital feature to a lowercase ‘a’ will replace it by the
small cap ‘a’. Below are descriptions and examples for each layout feature
that may be supported by OT FontFonts. A listing of layout features for a
specific OT FontFont can be found in the respective font-specific FF Info
Guide.
PostScript-flavoured OpenType fonts may include some layout features
which are not accessible in all applications. Users are encouraged to read
application documentation to determine which OpenType features are
supported in their specific workflow and update applications to the latest
versions which often include additional support.
opentype layout feature
N
aalt
F
calt
d | 11
example
access all alternates
This feature makes all variations of a selected character accessible, e. g. via the Glyph Palette.
n ▸ Nⁿnn
contextual alternates
This feature replaces default glyphs with alternate forms
which provide better joining behavior.
FONTFONT OPENTYPE USER GUIDE
first ▸ first
section d
LAYOUT
FEATURES
opentype layout feature
D
salt
I
liga
Q
clig
K
dlig
T
hist
d | 12
example
stylistic alternates
This feature replaces the default forms with stylistic
alternates. Many fonts contain alternate glyph designs for
a purely aesthetic effect; these don’t always fit into a clear
category like swash or historical.
& ▸ &&&
standard ligatures
The feature replaces a sequence of glyphs with a single glyph
which is preferred for typographic purposes. This feature is
applied by default.
fl ▸ fl
contextual ligatures
Replaces a sequence of glyphs with a single glyph which is
preferred for typographic purposes. Unlike other ligature features, the Contextual Ligatures feature specifies the context
in which the ligature is recommended.
the ▸ the
discretionary ligatures
This feature replaces a sequence of glyphs with a single
glyph which, in contrast to the Standard Ligatures feature,
may not be desired in all text settings.
historical forms
This feature replaces the default (current) forms with the
historical alternates.
FONTFONT OPENTYPE USER GUIDE
ct ▸ ct
s▸ſ
section d
LAYOUT
FEATURES
opentype layout feature
H
hlig
u
unic
A
smcp
B
c2sc
O
historical ligatures
This feature replaces the default (current) forms with the
historical alternates.
ß▸ß
unicase
This feature maps upper- and lowercase letters to a mixed
set of lowercase and small capital forms, resulting in a single
case alphabet.
a ove ▸ above
small capitals
Turns lowercase characters into Small Capitals. Forms related
to Small Capitals, such as Oldstyle Figures, may be included.
abc ▸ abc
small capitals from capitals
This feature turns capital characters into Small Capitals. It is
generally used for words which would otherwise be set in all
caps, such as acronyms, but which are desired in small-cap
form to avoid disrupting the flow of text.
petite capitals from capitals
Turns capital characters into Petite Capitals.
c2pc
d | 13
example
FONTFONT OPENTYPE USER GUIDE
ABC ▸ ABC
ABC ▸ abc
section d
LAYOUT
FEATURES
opentype layout feature
P
pcap
E
case
M
cpsp
Y
titl
d | 14
example
petite capitals
Some fonts contain an additional size of capital letters,
shorter than the regular Small Caps and whimsically referred
to as Petite Caps. This feature turns lowercase characters
into Petite Capitals. Forms related to Petite Capitals, such as
specially designed figures, may be included.
abc ▸ abc
case sensitive forms
By default, glyphs in a text face are designed to work with
lowercase characters. This feature shifts various punctuation marks up to a position that works better with all-capital
sequences or sets of lining figures. This feature also changes
Oldstyle Figures to Lining Figures.
{. . .I. . . .). . .›. . .I. . .«. . . . .▸. . . . . .{. . .I. . .). . .›. . .I. . . .«. . .
»I-2—
▸ »I-2—
..............................................
capital spacing
The Capital Spacing feature adjusts inter-glyph spacing for
all-capital text. Most typefaces contain capitals and lowercase characters, and the capitals are positioned to work with
the lowercase. When capitals are used for words, they need
more space between them for legibility and aesthetics.
ABC ▸ ABC
titling
This feature replaces the default glyphs with corresponding
forms designed specifically for titling.
FONTFONT OPENTYPE USER GUIDE
ABC ▸ ABC
section d
LAYOUT
FEATURES
opentype layout feature
C
swsh
W
cswh
G
frac
:
afrc
Z
ordn
d | 15
example
swash
This feature replaces default character glyphs with corresponding swash glyphs.
FONT ▸ FONT
contextual swash
This feature replaces default character glyphs with corresponding swash glyphs in a specified context.
Font ▸ Font
fractions
The feature replaces figures separated by a slash with common (diagonal) fractions. The number of fractions in a font
may vary. OpenType Standard FontFonts include at least
fractions for 1/4, 1/2 and 3/4.
2 13/16 ▸ 2 13/16
alternative fractions
This feature replaces figures separated by a slash with an
alternative (nut fraction) form. E. g. if you enter 3/4 in a
document you will get a specified three-quarter nut fraction.
1/4 ▸ -¹₄
ordinals
This feature replaces default alphabetic glyphs with the corresponding ordinal forms for use after figures.
FONTFONT OPENTYPE USER GUIDE
1st ▸ 1st
section d
LAYOUT
FEATURES
opentype layout feature
9
numr
8
dnom
4
sinf
5
sups
6
subs
d | 16
example
numerators
This feature replaces selected figures which precede a slash
with numerator figures, and replaces the typographic slash
with the fraction slash.
4/ ▸ 4/
denominators
Replaces selected figures which follow a slash with denominator figures in order to build additional fractions.
/9 ▸ /9
scientific inferiors
This feature replaces Lining or Oldstyle Figures with inferior
figures (smaller glyphs which sit lower than the standard
baseline, primarily for chemical or mathematical notation).
May also replace lowercase characters with alphabetic
inferiors.
CO2 ▸ CO2
superscript
Lining or oldstyle figures are replaced with superior figures
(primarily for footnote indication), and lowercase letters
are replaced with superior letters (primarily for abbreviated
French titles).
m3 ▸ m³
subscript
This feature will replace a default glyph with a subscript
glyph.
FONTFONT OPENTYPE USER GUIDE
N2 ▸ N2
section d
LAYOUT
FEATURES
opentype layout feature
1
onum
0
lnum
3
pnum
2
tnum
/
zero
d | 17
example
oldstyle figures
Changes selected figures from the lining style to the oldstyle
form.
167 ▸ 167
lining figures
This feature changes selected figures from oldstyle to the
lining form.
289 ▸ 289
proportional figures
This feature replaces figure glyphs set on uniform (tabular)
widths with corresponding glyphs set on glyph-specific (proportional) widths.
tabular figures
This feature replaces figure glyphs set on proportional widths
with corresponding glyphs set on uniform (tabular) widths.
3|2|8 ▸ 328
1|5|2 ▸ 152
328 ▸ 3|2|8
152 ▸ 1|5|2
slashed zero
Some fonts contain both a default form of zero and an alternative form which uses a diagonal slash through the counter.
Especially in condensed designs, it can be difficult to distinguish between 0 and O (zero and capital O) in any situation
where capitals and lining figures may be arbitrarily mixed.
This feature allows the user to change from the default 0 to a
slashed form.
FONTFONT OPENTYPE USER GUIDE
on 08 ▸ on �8
section d
LAYOUT
FEATURES
opentype layout feature
L
mgrk
7
nalt
J
ornm
l
locl
d | 18
example
mathematical greek
This feature replaces standard typographic forms of Greek
glyphs with corresponding forms commonly used in mathematical notation.
ΠΣ ▸ ∏∑
alternate annotation forms
Replaces default glyphs with various notational forms (e.g.
glyphs placed in open or solid circles, squares, parentheses,
diamonds or rounded boxes).
123! ▸ 123!
ornaments
This is a dual-function feature which uses two input methods
to give the user access to ornament glyphs (e. g. fleurons,
dingbats and border elements) in the font. One method
replaces the bullet character with a selection from the full
set of available ornaments; the other replaces specific lower
ASCII characters with ornaments assigned to them.
abc ▸ a b c
localized forms
This feature replaces certain glyphs with a different preferred
form depending on the language of the text.
FONTFONT OPENTYPE USER GUIDE
AŞ ▸ AŞ
section c
SUPPORTED
LAYOUT FEATURES
section d
LAYOUT
FEATURES
fontfont opentype®
examples
n
I
E
n
M
n
G
n
Z
n
N
n
ü
n
o
n
i
n
p
n
q
o
n
r
n
p
n
z
n
q
t
n
r
n
standard ligatures
example
opentype layout feature
s
size
¡
´
optical size
isol
p
init
o
medi
c|4
d | 19
isolated forms
abc
HOH▸eabc
HOH
1/2 e ½
fractions
Age 24 ¡ ▸ Age 24
1a2o
1ª2º
▸ Age 24
Age
24 e £
Age 24 ¡ £ ▸ Age 24
access all alternates
medial forms
terminal forms
This feature replaces a glyph with a different
formforms
used at the
initial
beginning of words.
medial forms
required ligatures
This feature replaces a glyph with a different
formforms
used in the
medial
middle of words.
glyph
ff
Seria composition
Arabic
decomposition
1e¹
عexamples
f ع
�fع
� f ع
� fع
forms
Replaces a glyph with its isolated form.isolated
Like the other
positional
forms features it is mainly used in the Arabic writing system.
initial forms
()[]{ e ()[]{
abc abc
This feature replaces the default forms with stylistic alternates organised in one or more corresponding sets. A font
ordinals
can contain up to 20 stylistic sets, each of which can be
switched on separately.
ss01
ss20
ü
case-sensitive forms
If a font family comes in various design sizes, this feature
allows an application to automatically choose
thespacing
design best
capital
suited for a specific text size instead of simple linear scaling.
stylistic sets
fiefi
/
initial forms
mark positioning
FONTFONT OPENTYPE USER GUIDE
required ligatures
mark to mark
positioning
glyph composition /
decomposition
الexamples
f ��
� f َع
َ بf ب
+◌
َ � f َع
اf ا+◌
ٔالf ��َ
◌ f ◌+◌
َ بf ب+ ◌َ
section d
LAYOUT
FEATURES
i
fina
q
rlig
c|4
r
ccmp
z
mark
t
mkmk
d | 20
n
E
M
n
G
n
Z
n
N
n
ü
n
o
n
i
n
o
n
p
o
n
p
n
q
o
n
p
n
q
r
n
p
n
q
r
n
z
q
r
n
z
n
t
r
n
z
n
t
n
z
n
t
n
t
n
capital spacing
HOH e HOH
fractions
1/2 e ½
ordinals
1a2o e 1ª2º
access all alternates
1e¹
opentype layout feature
isolated forms
final forms
medial forms
example
This feature replaces a glyph with a different
form used
at the
terminal
forms
ending of words.
required ligatures
medial
initial forms
forms
medial forms
initial forms
required
ligatures
This feature replaces a sequence of glyphs
with a single
glyph which is not only preferred for typographic
purposes
medial forms
like in the Standard Ligatures feature, but is required.
initial forms
required ligatures/
glyph
ff
Seria composition
Arabic
decomposition
initial forms
glyph composition/decomposition
required ligatures
glyph
composition
This feature contains information on how
to compose
and
mark
positioning
decomposition
decompose accented glyphs.
/
required ligatures
glyph composition /
decomposition
mark
mark positioning
to mark
mark to base positioning positioning
glyph composition /
decomposition
This feature contains information on where
to position
diamark
positioning
critical marks in relation to their base glyphs.
mark to mark positioning
mark to mark
positioning
mark positioning
mark to mark
positioning
mark
to mark
This feature contains information on where
to position
diapositioning
critical marks in relation to other diacritical
marks, e. g. for
stacked diacritics.
FONTFONT OPENTYPE USER GUIDE
c|5
ff Seria Arabic
c|5
ff Seria Arabic
عexamples
f ع
� examples
fع
� f ع
�� examples
f
f عع
� examples
fع
� الf
f ��ع
�fع
� f َع
َ بf ب
ال+f ◌��
� fع
الf ��ََ
ََ بf ب
اf ا++ ◌
◌َ
ال
f
ََ بf ٔب+ ◌��َ
اf◌ ا++ ◌َ
◌َ f
َ بf ب+ ◌َ
اf ٔ ا+ ◌َ
◌ fَ ◌ + ◌َ
اf ٔ ا+ ◌َ
◌ f ◌+◌
َ
ٔ
◌ f ◌+◌
section d
LAYOUT
FEATURES
combining layout features
Layout features may be combined, allowing access to additional glyph forms not found in any single feature.
May 6, 2007 0 ▸ May 6, 2007
0 A ▸ May 6, 2007
May 6, 2007 A ▸ May 6, 2007
Swashes F ▸ Swashes F ¤ ▸ Swashes
Catfish I ▸ Catfish
I ¢ ▸ Catfish
Catfish ¢ ▸ Catfish
54 m2 5 ▸ 54 m2 5 ¡ ▸ 54 m2 5 ¡ A ▸ 54 m2
d | 21
FONTFONT OPENTYPE USER GUIDE
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