HOME

TheInfoList



OR:

S, or s, is the nineteenth
letter Letter, letters, or literature may refer to: Characters typeface * Letter (alphabet), a character representing one or more of the sounds used in speech; any of the symbols of an alphabet. * Letterform, the graphic form of a letter of the alphabe ...
in the
Latin alphabet The Latin alphabet or Roman alphabet is the collection of letters originally used by the ancient Romans to write the Latin language. Largely unaltered with the exception of extensions (such as diacritics), it used to write English and the ...
, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ess'' (pronounced ), plural ''esses''.


History


Origin

Northwest Semitic Northwest Semitic is a division of the Semitic languages comprising the indigenous languages of the Levant. It emerged from Proto-Semitic in the Early Bronze Age. It is first attested in proper names identified as Amorite in the Middle Bronze Age ...
šîn represented a
voiceless postalveolar fricative A voiceless postalveolar fricative is a type of consonantal sound used in some spoken languages. The International Phonetic Association uses the term ''voiceless postalveolar fricative'' only for the sound , but it also describes the voiceles ...
(as in 'ip'). It originated most likely as a
pictogram A pictogram, also called a pictogramme, pictograph, or simply picto, and in computer usage an icon, is a graphic symbol that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are often used in writing and ...
of a
tooth A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tear ...
() and represented the phoneme via the acrophonic principle. Ancient Greek did not have a phoneme, so the derived Greek letter
sigma Sigma (; uppercase Σ, lowercase σ, lowercase in word-final position ς; grc-gre, σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as ...
() came to represent the
voiceless alveolar sibilant The voiceless alveolar fricatives are a type of fricative consonant pronounced with the tip or blade of the tongue against the alveolar ridge (gum line) just behind the teeth. This refers to a class of sounds, not a single sound. There are at le ...
. While the letter shape Σ continues Phoenician ''šîn'', its name ''sigma'' is taken from the letter ''
samekh Samekh (Phoenician ''sāmek'' ; Hebrew ''samekh'' , Syriac ''semkaṯ'') is the fifteenth letter of the Semitic abjads, including the Hebrew alphabet. Samekh represents a voiceless alveolar fricative . Unlike most Semitic consonants, the ...
'', while the shape and position of ''samekh'' but name of ''šîn'' is continued in the '' xi''. Within Greek, the name of ''sigma'' was influenced by its association with the Greek word (earlier ) "to hiss". The original name of the letter "sigma" may have been ''san'', but due to the complicated early history of the Greek epichoric alphabets, "san" came to be identified as a separate letter, Ϻ.
Herodotus Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria (Italy). He is known for ...
reports that "San" was the name given by the
Dorians The Dorians (; el, Δωριεῖς, ''Dōrieîs'', singular , ''Dōrieús'') were one of the four major ethnic groups into which the Hellenes (or Greeks) of Classical Greece divided themselves (along with the Aeolians, Achaeans, and Ionians ...
to the same letter called "Sigma" by the
Ionians The Ionians (; el, Ἴωνες, ''Íōnes'', singular , ''Íōn'') were one of the four major tribes that the Greeks considered themselves to be divided into during the ancient period; the other three being the Dorians, Aeolians, and Achaea ...
. The Western Greek alphabet used in Cumae was adopted by the
Etruscans The Etruscan civilization () was developed by a people of Etruria in ancient Italy with a common language and culture who formed a federation of city-states. After conquering adjacent lands, its territory covered, at its greatest extent, rough ...
and
Latins The Latins were originally an Italic tribe in ancient central Italy from Latium. As Roman power and colonization spread Latin culture during the Roman Republic. Latins culturally "Romanized" or "Latinized" the rest of Italy, and the word Lat ...
in the 7th century BC, over the following centuries developing into a range of
Old Italic alphabets The Old Italic scripts are a family of similar ancient writing systems used in the Italian Peninsula between about 700 and 100 BC, for various languages spoken in that time and place. The most notable member is the Etruscan alphabet, which ...
including the
Etruscan alphabet The Etruscan alphabet was the alphabet used by the Etruscans, an ancient civilization of central and northern Italy, to write their language, from about 700 BC to sometime around 100 AD. The Etruscan alphabet derives from the Euboean alphabe ...
and the early
Latin alphabet The Latin alphabet or Roman alphabet is the collection of letters originally used by the ancient Romans to write the Latin language. Largely unaltered with the exception of extensions (such as diacritics), it used to write English and the ...
. In Etruscan, the value of Greek sigma (𐌔) was maintained, while san (𐌑) represented a separate phoneme, most likely (transliterated as ''ś''). The early Latin alphabet adopted sigma, but not san, as Old Latin did not have a phoneme. The shape of Latin S arises from Greek Σ by dropping one out of the four strokes of that letter. The (angular) S-shape composed of three strokes existed as a variant of the four-stroke letter Σ already in the epigraphy in
Western Greek alphabets Many local variants of the Greek alphabet were employed in ancient Greece during the archaic and early classical periods, until around 400 BC, when they were replaced by the classical 24-letter alphabet that is the standard today. All forms ...
, and the three and four strokes variants existed alongside one another in the classical Etruscan alphabet. In other Italic alphabets (Venetic, Lepontic), the letter could be represented as a zig-zagging line of any number between three and six strokes. The Italic letter was also adopted into
Elder Futhark The Elder Futhark (or Fuþark), also known as the Older Futhark, Old Futhark, or Germanic Futhark, is the oldest form of the runic alphabets. It was a writing system used by Germanic peoples for Northwest Germanic dialects in the Migration Per ...
, as '' Sowilō'' (), and appears with four to eight strokes in the earliest runic inscriptions, but is occasionally reduced to three strokes () from the later 5th century, and appears regularly with three strokes in
Younger Futhark The Younger Futhark, also called Scandinavian runes, is a runic alphabet and a reduced form of the Elder Futhark, with only 16 characters, in use from about the 9th century, after a "transitional period" during the 7th and 8th centuries. The r ...
.


Long s

The minuscule form ſ, called the long ''s'', developed in the early medieval period, within the
Visigothic The Visigoths (; la, Visigothi, Wisigothi, Vesi, Visi, Wesi, Wisi) were an early Germanic people who, along with the Ostrogoths, constituted the two major political entities of the Goths within the Roman Empire in late antiquity, or what is kno ...
and
Carolingian The Carolingian dynasty (; known variously as the Carlovingians, Carolingus, Carolings, Karolinger or Karlings) was a Frankish noble family named after Charlemagne, grandson of mayor Charles Martel and a descendant of the Arnulfing and Pippi ...
hands, with predecessors in the
half-uncial Uncial is a majuscule Glaister, Geoffrey Ashall. (1996) ''Encyclopedia of the Book''. 2nd edn. New Castle, DE, and London: Oak Knoll Press & The British Library, p. 494. script (written entirely in capital letters) commonly used from the 4th to ...
and
cursive Cursive (also known as script, among other names) is any style of penmanship in which characters are written joined in a flowing manner, generally for the purpose of making writing faster, in contrast to block letters. It varies in functionali ...
scripts of
Late Antiquity Late antiquity is the time of transition from classical antiquity to the Middle Ages, generally spanning the 3rd–7th century in Europe and adjacent areas bordering the Mediterranean Basin. The popularization of this periodization in English h ...
. It remained standard in western writing throughout the medieval period and was adopted in early printing with movable types. It existed alongside minuscule "round" or "short" ''s'', which was at the time only used at the end of words. In most Western orthographies, the ſ gradually fell out of use during the second half of the 18th century, although it remained in occasional use into the 19th century. In Spain, the change was mainly accomplished between 1760 and 1766. In France, the change occurred between 1782 and 1793. Printers in the United States stopped using the long ''s'' between 1795 and 1810. In English orthography, the London printer John Bell (1745–1831) pioneered the change. His edition of Shakespeare, in 1785, was advertised with the claim that he "ventured to depart from the common mode by rejecting the long 'ſ' in favor of the round one, as being less liable to error....." ''
The Times ''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its current name on 1 January 1788. ''The Times'' and its s ...
'' of London made the switch from the long to the short ''s'' with its issue of 10 September 1803. ''Encyclopædia Britannica'''s 5th edition, completed in 1817, was the last edition to use the long ''s''. In
German orthography German orthography is the orthography used in writing the German language, which is largely phonemic. However, it shows many instances of spellings that are historic or analogous to other spellings rather than phonemic. The pronunciation of al ...
, long ''s'' was retained in
Fraktur Fraktur () is a calligraphic hand of the Latin alphabet and any of several blackletter typefaces derived from this hand. The blackletter lines are broken up; that is, their forms contain many angles when compared to the curves of the Antiqua ...
(
Schwabacher The German word Schwabacher (pronounced ) refers to a specific style of blackletter typefaces which evolved from Gothic Textualis (''Textura'') under the influence of Humanist type design in Italy during the 15th century. Schwabacher typeset ...
) type as well as in standard cursive (
Sütterlin (, " script") is the last widely used form of , the historical form of German handwriting that evolved alongside German blackletter (most notably ') typefaces. Graphic artist Ludwig Sütterlin was commissioned by the Prussian Ministry of Scie ...
) well into the 20th century, and was officially abolished in 1941. The
ligature Ligature may refer to: * Ligature (medicine), a piece of suture used to shut off a blood vessel or other anatomical structure ** Ligature (orthodontic), used in dentistry * Ligature (music), an element of musical notation used especially in the me ...
of ''ſs'' (or ''ſz'') was retained, however, giving rise to the '' Eszett'' , in contemporary German orthography.


Use in writing systems

The letter is the seventh most common letter in
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...
and the third-most common consonant after and . It is the most common letter for the first letter of a word in the English language. In English and several other languages, primarily
Western Romance Western Romance languages are one of the two subdivisions of a proposed subdivision of the Romance languages based on the La Spezia–Rimini Line. They include the Gallo-Romance and Iberian Romance branches. Gallo-Italic may also be included. ...
ones like
Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many Latin American countries **Spanish cuisine Other places * Spanish, Ontario, Can ...
and French, final is the usual mark of
plural The plural (sometimes abbreviated pl., pl, or ), in many languages, is one of the values of the grammatical category of number. The plural of a noun typically denotes a quantity greater than the default quantity represented by that noun. This ...
noun A noun () is a word that generally functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.Example nouns for: * Living creatures (including people, alive, ...
s. It is the regular ending of English
third person Third person, or third-person, may refer to: * Third person (grammar), a point of view (in English, ''he'', ''she'', ''it'', and ''they'') ** Illeism, the act of referring to oneself in the third person * Third-person narrative, a perspective in ...
present tense The present tense (abbreviated or ) is a grammatical tense whose principal function is to locate a situation or event in the present time. The present tense is used for actions which are happening now. In order to explain and understand present t ...
verb A verb () is a word (part of speech) that in syntax generally conveys an action (''bring'', ''read'', ''walk'', ''run'', ''learn''), an occurrence (''happen'', ''become''), or a state of being (''be'', ''exist'', ''stand''). In the usual descrip ...
s. represents the voiceless alveolar or voiceless dental sibilant in most languages as well as in the
International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation ...
. It also commonly represents the voiced alveolar or
voiced dental sibilant The voiced alveolar fricatives are consonantal sounds. The symbol in the International Phonetic Alphabet that represents these sounds depends on whether a sibilant or non-sibilant fricative is being described. * The symbol for the alveolar sibilant ...
, as in Portuguese ''mesa'' (table) or English 'rose' and 'bands', or it may represent the
voiceless palato-alveolar fricative A voiceless postalveolar fricative is a type of consonantal sound used in some spoken languages. The International Phonetic Association uses the term ''voiceless postalveolar fricative'' only for the sound , but it also describes the voicele ...
, as in most
Portuguese dialects Portuguese dialects are the mutually intelligible variations of the Portuguese language over Portuguese-speaking countries and other areas holding some degree of cultural bound with the language. Portuguese has two standard forms of writing and ...
when syllable-finally, in Hungarian, in German (before , ) and some English words as 'sugar', since yod-coalescence became a dominant feature, and , as in English 'measure' (also because of yod-coalescence),
European Portuguese European Portuguese ( pt, português europeu, ), also known as Portuguese of Portugal (Portuguese: português de Portugal), Iberian Portuguese (Portuguese: português ibérico), and Peninsular Portuguese (Portuguese: português peninsular), refer ...
''Islão'' (Islam) or, in many sociolects of Brazilian Portuguese, ''esdrúxulo'' (
proparoxytone In linguistics, a proparoxytone ( el, προπαροξύτονος, ) is a word with stress on the antepenultimate (third last) syllable, such as the English words "cinema" and "operational". Related terms are paroxytone (stress on the penultima ...
) in some Andalusian dialects, it merged with
Peninsular Spanish Peninsular Spanish ( es, español peninsular) (also known as the Spanish of Spain ( es, español de España, links=no), European Spanish ( es, español europeo, links=no), Iberian Spanish ( es, español ibérico, links=no) or Spanish Spanish ( es ...
and and is now pronounced . In some English words of French origin, the letter is silent, as in 'isle' or 'debris'. In Turkmen, represents . The digraph for English arises in Middle English (alongside ), replacing the Old English digraph. Similarly, Old High German was replaced by in Early Modern High German orthography.


Related characters


Descendants and related characters in the Latin alphabet

*ſ : Latin letter
long s The long s , also known as the medial s or initial s, is an archaic form of the lowercase letter . It replaced the single ''s'', or one or both of the letters ''s'' in a 'double ''s sequence (e.g., "ſinfulneſs" for "sinfulness" and "poſ ...
, an obsolete variant of s *ẜ ẝ : Various forms of long s were used for medieval
scribal abbreviation Scribal abbreviations or sigla (singular: siglum) are abbreviations used by ancient and medieval scribes writing in various languages, including Latin, Greek, Old English and Old Norse. In modern manuscript editing (substantive and mechanica ...
s *ẞ ß : German Eszett or "sharp S", derived from a ligature of long s followed by either s or z *S with
diacritic A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacriti ...
s: Ś ś Ṡ ṡ ẛ Ṩ ṩ Ṥ ṥ Ṣ ṣ S̩ s̩ Ꞩ ꞩ Ꟊꟊ Ŝ ŝ Ṧ ṧ Š š Ş ş Ș ș S̈ s̈ Ȿ ȿ *ₛ : Subscript small s was used in the Uralic Phonetic Alphabet prior to its formal standardization in 1902 * ˢ : Modifier letter small s is used for phonetic transcription *ꜱ : Small capital S was used in the Icelandic First Grammatical Treatise to mark
gemination In phonetics and phonology, gemination (), or consonant lengthening (from Latin 'doubling', itself from ''gemini'' 'twins'), is an articulation of a consonant for a longer period of time than that of a singleton consonant. It is distinct from ...
*Ʂ ʂ : S with hook, used for writing
Mandarin Chinese Mandarin (; ) is a group of Chinese (Sinitic) dialects that are natively spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of the phonology of Standard Chinese, the official language o ...
using the early draft version of
pinyin Hanyu Pinyin (), often shortened to just pinyin, is the official romanization system for Standard Mandarin Chinese in China, and to some extent, in Singapore and Malaysia. It is often used to teach Mandarin, normally written in Chinese f ...
romanization during the mid-1950s *Ƨ ƨ : Latin letter reversed S (used in Zhuang transliteration) * 𝼩 : Latin small letter s with mid-height left hook was used by the
British and Foreign Bible Society The British and Foreign Bible Society, often known in England and Wales as simply the Bible Society, is a non-denominational Christian Bible society with charity status whose purpose is to make the Bible available throughout the world. The So ...
in the early 20th century for romanization of the
Malayalam Malayalam (; , ) is a Dravidian languages, Dravidian language spoken in the Indian state of Kerala and the union territories of Lakshadweep and Puducherry (union territory), Puducherry (Mahé district) by the Malayali people. It is one of 2 ...
language. * IPA-specific symbols related to S: * Para-IPA version of the IPA fricative ɕ: 𝼞 𐞺 *Ꞅ ꞅ : Insular S *Ꟗ ꟗ : Used in
Middle Scots Middle Scots was the Anglic language of Lowland Scotland in the period from 1450 to 1700. By the end of the 15th century, its phonology, orthography, accidence, syntax and vocabulary had diverged markedly from Early Scots, which was virtuall ...
*Ꟙ ꟙ : Latin letter Sigmoid S was used in
medieval In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
palaeography Palaeography ( UK) or paleography ( US; ultimately from grc-gre, , ''palaiós'', "old", and , ''gráphein'', "to write") is the study of historic writing systems and the deciphering and dating of historical manuscripts, including the analysi ...


Derived signs, symbols, and abbreviations

*$ :
Dollar sign The dollar sign, also known as peso sign, is a symbol consisting of a capital " S" crossed with one or two vertical strokes ($ or ), used to indicate the unit of various currencies around the world, including most currencies denominated "pe ...
*₷ :
Spesmilo The ''spesmilo'' (, plural ''spesmiloj'' ) is an obsolete decimal international currency, proposed in 1907 by René de Saussure and used before World War I by a few British and Swiss banks, primarily the Ĉekbanko Esperantista. The ''spesmilo ...
*§ :
Section sign The section sign, §, is a typographical character for referencing individually numbered sections of a document; it is frequently used when citing sections of a legal code. It is also known as the section symbol, section mark, double-s, or s ...
*℠ :
Service mark symbol The service mark symbol (the letters in small capitals and superscript style), is a symbol used in the United States and some other jurisdictions to provide notice that the preceding mark is a service mark. This symbol may be used for se ...
*∫ :
Integral symbol The integral symbol: : ( Unicode), \displaystyle \int (LaTeX) is used to denote integrals and antiderivatives in mathematics, especially in calculus. History The notation was introduced by the German mathematician Gottfried Wilhelm Leibniz i ...
, short for
summation In mathematics, summation is the addition of a sequence of any kind of numbers, called ''addends'' or ''summands''; the result is their ''sum'' or ''total''. Beside numbers, other types of values can be summed as well: functions, vectors, matr ...
(derived from long s)


Ancestors and siblings in other alphabets

* 𐤔 : Semitic letter
Shin Shin may refer to: Biology * The front part of the human leg below the knee * Shinbone, the tibia, the larger of the two bones in the leg below the knee in vertebrates Names * Shin (given name) (Katakana: シン, Hiragana: しん), a Japanese g ...
, from which the following symbols originally derive **
archaic Greek Archaic Greece was the period in Greek history lasting from circa 800 BC to the second Persian invasion of Greece in 480 BC, following the Greek Dark Ages and succeeded by the Classical period. In the archaic period, Greeks settled across the M ...
Sigma Sigma (; uppercase Σ, lowercase σ, lowercase in word-final position ς; grc-gre, σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as ...
could be written with different numbers of angles and strokes. Besides the classical form with four strokes (), a three-stroke form resembling an angular Latin S () was commonly found, and was particularly characteristic of some mainland Greek varieties including Attic and several "red" alphabets. ***Σ:
classical Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...
letter
Sigma Sigma (; uppercase Σ, lowercase σ, lowercase in word-final position ς; grc-gre, σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as ...
****Ϲ ϲ: Greek
lunate sigma Sigma (; uppercase Σ, lowercase σ, lowercase in word-final position ς; grc-gre, σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used a ...
***** :
Coptic Coptic may refer to: Afro-Asia * Copts, an ethnoreligious group mainly in the area of modern Egypt but also in Sudan and Libya * Coptic language, a Northern Afro-Asiatic language spoken in Egypt until at least the 17th century * Coptic alphabet, t ...
letter sima *****С с :
Cyrillic The Cyrillic script ( ), Slavonic script or the Slavic script, is a writing system used for various languages across Eurasia. It is the designated national script in various Slavic, Turkic, Mongolic, Uralic, Caucasian and Iranic-speaking cou ...
letter Es, derived from a form of sigma ***𐌔 : Old Italic letter S, includes the variants also found in the archaic Greek letter ****S:
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
letter S **** :
Runic Runes are the letters in a set of related alphabets known as runic alphabets native to the Germanic peoples. Runes were used to write various Germanic languages (with some exceptions) before they adopted the Latin alphabet, and for specialised ...
letter sowilo, which is derived from Old Italic S ***: Gothic letter sigil * Ս : Armenian letter Se


Computing codes

: 1


Other representations


Chemistry

The letter S is used: * In a
chemical formula In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...
to represent
sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formul ...
. For example, is
sulfur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic ac ...
. * In the
preferred IUPAC name In chemical nomenclature, a preferred IUPAC name (PIN) is a unique name, assigned to a chemical substance and preferred among the possible names generated by IUPAC nomenclature. The "preferred IUPAC nomenclature" provides a set of rules for choo ...
for a chemical, to indicate a specific
enantiomer In chemistry, an enantiomer ( /ɪˈnænti.əmər, ɛ-, -oʊ-/ ''ih-NAN-tee-ə-mər''; from Ancient Greek ἐνάντιος ''(enántios)'' 'opposite', and μέρος ''(méros)'' 'part') – also called optical isomer, antipode, or optical ant ...
. For example, "(S)-2-(4-Chloro-2-methylphenoxy)propanoic acid" is one of the enantiomers of
mecoprop Mecoprop (also known as methylchlorophenoxypropionic acid and MCPP) is a common general use herbicide found in many household weed killers and "weed-and-feed" type lawn fertilizers. It is primarily used to control broadleaf weeds.Cool S * See about Ⓢ in
Enclosed Alphanumerics Enclosed Alphanumerics is a Unicode block of typographical symbols of an alphanumeric within a circle, a bracket or other not-closed enclosure, or ending in a full stop. It is currently fully allocated. Within the Basic Multilingual Plane ...


References


External links

* * * * {{Latin alphabet, S} ISO basic Latin letters