An asterisk (*); from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star",[1][2] is a typographical symbol or glyph. It is so called because it resembles a conventional image of a star.

In UnicodeU+002A * ASTERISK (HTML *)
See alsoU+2042 ASTERISM (HTML ⁂)

Computer scientists and mathematicians often vocalize it as star (as, for example, in the A* search algorithm or C*-algebra). In English, an asterisk is usually five-pointed in sans-serif typefaces, six-pointed in serif typefaces,[3] and six- or eight-pointed when handwritten. It is often used to censor offensive words, and on the Internet, to indicate a correction to a previous message.

In computer science, the asterisk is commonly used as a wildcard character, or to denote pointers, repetition, or multiplication.


The asterisk has already been used as a symbol in ice age cave paintings.[4] There is also a two thousand year old character used by Aristarchus of Samothrace called the asteriskos, ※, which he used when proofreading Homeric poetry to mark lines that were duplicated.[5] Origen is known to have also used the asteriskos to mark missing Hebrew lines from his Hexapla.[6] The asterisk evolved in shape over time, but its meaning as a symbol used to correct defects remained.

In the Middle Ages, the asterisk was used to emphasize a particular part of text, often linking those parts of the text to a marginal comment.[7] However, an asterisk was not always used.

One hypothesis to the origin of the asterisk is that it stems from the five thousand year old Sumerian character dingir, 𒀭,[8] though this hypothesis seems to only be based on visual appearance.[9]



When toning down expletives, asterisks are often used to replace letters. For example, the word "fuck" might become "f**k", "f*ck" or even "****".[10] Vowels tend to be censored with an asterisk more than consonants, but the intelligibility of censored profanities with multiple syllables such as "b*ll*cks" (bollocks) or uncommon ones is higher if put in context with surrounding text.[11]

Competitive sports and games

In colloquial usage, an asterisk is used to indicate that a record is somehow tainted by circumstances, which are putatively explained in a footnote referenced by the asterisk.[12]


The usage of the term in sports arose during the 1961 baseball season in which Roger Maris of the New York Yankees was threatening to break Babe Ruth's 34-year-old single-season home run record. Ruth had amassed 60 home runs in a season with only 154 games, but Maris was playing the first season in the American League's newly expanded 162-game season. Baseball Commissioner Ford Frick, a friend of Ruth's during the legendary slugger's lifetime, held a press conference to announce his "ruling" that should Maris take longer than 154 games both records would be acknowledged by Major League Baseball, but that some "distinctive mark" [his term][13] be placed next to Maris', which should be listed alongside Ruth's achievement in the "record books". The asterisk as such a mark was suggested at that time by New York Daily News sportswriter Dick Young, not Frick.[13] The reality, however, was that MLB actually had no direct control over any record books until many years later, and it all was merely a suggestion on Frick's part. Within a few years the controversy died down and all prominent baseball record keepers listed Maris as the single-season record holder.[13]

Nevertheless the stigma of holding a tainted record remained with Maris for many years, and the concept of a real or figurative asterisk denoting less-than-accepted "official" records has become widely used in sports and other competitive endeavors. A 2001 TV movie about Maris's record-breaking season was called 61* (pronounced sixty-one asterisk) in reference to the controversy.

Uproar over the integrity of baseball records and whether or not qualifications should be added to them arose again in the late 1990s, when a steroid-fueled power explosion led to the shattering of Maris' record. Even though it was obvious - and later admitted[14] - by Bunyonesque Mark McGwire that he was heavily juiced on steroids when he hit 70 homers in 1998, baseball did the annoyance of many fans and sportswriters. Three years later evident steroid-user Barry Bonds pushed that record out to 73, and fans once again began to call for an asterisk in the sport's record books.

Fans were especially critical and clamored louder for baseball to act during the 2007 season, as Bonds approached and later broke Hank Aaron's career home run record of 755.[15] Antagonized fans would often hold up signs bearing asterisks whenever Bonds came up to bat. After Bonds hit his record-breaking 756th home run that season, a fashion designer and entrepreneur purchased the home run ball from the fan who caught it, and ran a poll on his website to determine its fate. He subsequently donated the ball, marked with a die-cut asterisk, to the Baseball Hall of Fame.

  • In recent years, the asterisk has come into use on baseball scorecards to denote a "great defensive play."[16]

Usage in anti-doping campaigns

  • By the end of the first decade of the 21st century, the association of baseball and its records with doping had become so notorious that the term "asterisk" had become firmly associated with doping in sport. In February 2011 the United States Olympic Committee and the Ad Council launched an anti-steroid campaign called "Play Asterisk Free"[17] aimed at teens. The campaign, whose logo uses a heavy asterisk, first launched in 2008 under the name Don't Be An Asterisk.[18]


  • In cricket, it signifies a total number of runs scored by a batsman without losing his wicket; e.g. "107*" means "107 not out".
  • Where only the scores of the two batsmen that are currently in are being shown, an asterisk following a batsman's score indicates that he is due to face the next ball to be delivered.
  • When written before a player's name on a scorecard, it indicates the captain of the team.
  • It is also used on television when giving a career statistic during a match. For example, "47*" in a number of matches column means that the current game is the player's 47th.


Computer science

Computer interfaces

  • In some command line interfaces, such as the Unix shell and Microsoft's CMD, the asterisk is the wildcard character and stands for any string of characters. This is also known as a wildcard symbol. A common use of the wildcard is in searching for files on a computer. For instance, if a user wished to find a document called Document 1, search terms such as Doc* and D*ment* would return this file. Document* would also return any file that begins with Document.
  • In some graphical user interfaces an asterisk is pre- or appended to the current working document name shown in a window's title bar to indicate that unsaved changes exist.
  • In many computing and Internet applications an asterisk, or another character, is displayed to indicate that a character of a password or other confidential information has been entered, without the risk of displaying the actual character.
  • In Commodore (and related) filesystems, an asterisk appearing next to a filename in a directory listing denotes an improperly closed file, commonly called a "splat file".
  • In travel industry Global Distribution Systems, the asterisk is the display command to retrieve all or part of a Passenger Name Record.
  • In HTML web forms, an asterisk can be used to denote required fields.
  • Chat room etiquette calls on one asterisk to correct a misspelled word that has already been submitted. For example, one could post lck, then follow it with *luck or luck* (the placement of the * on the left or right is a matter of personal style) to correct the word's spelling, or if it's someone else that notices the mistake, they might also use *luck or luck*.[19]
    • Enclosing a phrase between two asterisks is used to denote an action the user is "performing", e.g. *pulls out a paper*, although this usage is also common on forums, and less so on most chat rooms due to /me or similar commands. Hyphens (-action-) and double colons (::action::) as well as the operator /me are also used for similar purposes.
Adding machines and printing calculators
  • Some international models of adding machines and printing calculators use the asterisk to denote the total, or the terminal sum or difference of an addition or subtraction sequence, respectively, sometimes on the keyboard where the total key is marked with an asterisk and sometimes a capital T, and on the printout.

Programming languages

Many programming languages and calculators use the asterisk as a symbol for multiplication. It also has a number of special meanings in specific languages, for instance:

  • In some programming languages such as the C, C++, and Go programming languages, the asterisk is used to dereference or to declare a pointer variable.
  • In the Common Lisp programming language, the names of global variables are conventionally set off with asterisks, *LIKE-THIS*.
  • In the Ada, Fortran, Perl, Python, Ruby programming languages, in some dialects of the Pascal programming language, and many others, a double asterisk is used to signify exponentiation: 5**3 is 53 = 125.
  • In the Perl programming language, the asterisk is used to refer to the typeglob of all variables with a given name.
  • In the programming languages Ruby and Python, * has two specific uses. First, the unary * operator applied to a list object inside a function call will expand that list into the arguments of the function call. Second, a parameter preceded by * in the parameter list for a function will result in any extra positional parameters being aggregated into a tuple (Python) or array (Ruby), and likewise a parameter preceded by ** will result in any extra keyword parameters being aggregated into a dictionary (Python) or hash (Ruby).
  • In the APL language, the asterisk represents the exponential and exponentiation functions, with *X representing eX, and Y*X representing YX.
  • In IBM Job Control Language, the asterisk has various functions, including in-stream data in the DD statement, the default print stream as SYSOUT=*, and as a self-reference in place of a procedure step name to refer to the same procedure step where it appears.
  • In Haskell, the asterisk represents the set of well-formed, fully applied types; that is, a 0-ary kind of types.

Comments in programming languages

In the B programming language and languages that borrow syntax from it, such as C, PHP, Java, or C#, comments in the source code (for information to people, ignored by the compiler) are marked by an asterisk combined with the slash:

/* This section displays message if user input was not valid
   (comment ignored by compiler) */

Some Pascal-like programming languages, for example, Object Pascal, Modula-2, Modula-3, and Oberon, as well as several other languages including ML, Wolfram Language (Mathematica), AppleScript, OCaml, Standard ML, and Maple, use an asterisk combined with a parenthesis:

(* Do not change this variable - it is used later
   (comment ignored by compiler) *)

CSS, while not a programming language, also uses the slash-star comment format.

body {
  /* This ought to make the text more readable for far-sighted people */
  font-size: 24pt;

Each computing language has its own way of handling comments; "/* ... */" and similar notations are not universal.


  • In economics, the use of an asterisk after a letter indicating a variable such as price, output, or employment indicates that the variable is at its optimal level (that which is achieved in a perfect market situation). For instance, p* is the price level p when output y is at its corresponding optimal level of y*.
  • Also in international economics asterisks are commonly used to denote economic variables in a foreign country. So, for example, "p" is the price of the home good and "p*" is the price of the foreign good, etc.


  • In the GCSE and A-Level examinations in the United Kingdom and the PSLE in Singapore, A* ("A-star") is a special top grade that is distinguished from grade A. (This will phase out starting from 2021.)
  • In the Hong Kong Diploma of Secondary Education (HKDSE) examination in Hong Kong, 5** (5-star-star) and 5* (5-star) are two special top grades that are distinguished from Level 5. Level 5** is the highest level a candidate can attain in HKDSE.

Fluid mechanics

In fluid mechanics an asterisk in superscript is sometimes used to mean a property at sonic speed.[20]


  • Certain categories of character types in role-playing games are called splats, and the game supplements describing them are called splatbooks. This usage originated with the shorthand "*book" for this type of supplement to various World of Darkness games, such as Clanbook: Ventrue (for Vampire: The Masquerade) or Tribebook: Black Furies (for Werewolf: The Apocalypse), and this usage has spread to other games with similar character-type supplements. For example, Dungeons & Dragons Third Edition has had several lines of splatbooks: the "X & Y" series including Sword & Fist and Tome & Blood prior to the "3.5" revision, the "Complete X" series including Complete Warrior and Complete Divine, and the "Races of X" series including Races of Stone and Races of the Wild.
  • In many MUDs and MOOs, as well as "male", "female", and other more esoteric genders, there is a gender called "splat", which uses an asterisk to replace the letters that differ in standard English gender pronouns. For example, h* is used rather than him or her. Also, asterisks are used to signify doing an action, for example, "*action*".
  • Game show producer Mark Goodson used a six-pointed asterisk as his trademark. It is featured prominently on many set pieces from The Price Is Right.
  • Scrabble players put an asterisk after a word to indicate that an illegal play was made.[21]

Human genetics

  • In human genetics, * is used to denote that someone is a member of a haplogroup and not any of its subclades (see * (haplogroup)).


In linguistics, an asterisk is placed before a word or phrase to indicate that it is not used, or there are no records of it being in use. This is used in several ways depending on what is being discussed.

Historical linguistics

In historical linguistics, the asterisk marks words or phrases that are not directly recorded in texts or other media, and that are therefore reconstructed on the basis of other linguistic material (see also comparative method).

In the following example, the Proto-Germanic word *ainlif is a reconstructed form.

A double asterisk indicates a form that would be expected according to a rule, but is not actually found. That is, it indicates a reconstructed form that is not found or used, and in place of which another form is found in actual usage:

  • For the plural, **kubar would be expected, but separate masculine plural akābir أكابر and feminine plural kubrayāt كبريات are found as irregular forms.


In most areas of linguistics, but especially in syntax, an asterisk in front of a word or phrase indicates that the word or phrase is not used because it is ungrammatical.

  • wake her up / *wake up her

An asterisk before a parenthesis indicates that the lack of the word or phrase inside is ungrammatical, while an asterisk after the opening bracket of the parenthesis indicates that the existence of the word or phrase inside is ungrammatical.

  • go *(to) the station - Here, "go the station" would be ungrammatical.
  • go (*to) home - Here, "go to home" would be ungrammatical.

Since a word marked with an asterisk could mean either "unattested" or "impossible", it is important in some contexts to distinguish these meanings. In general, authors retain asterisks for "unattested", and prefix ˣ, **, †, or a superscript "?" for the latter meaning. An alternative is to append the asterisk (or another symbol, possibly to differentiate between even more cases) at the end.

Optimality theory

In optimality theory, asterisks are used as "violation marks" in tableau cells to denote a violation of a constraint by an output form.[22]

Phonetic transcription

In the early days of the International Phonetic Alphabet, an asterisk was sometimes used to denote that the word it preceded was a proper noun.[23] See this example from W. Perrett's 1921 transcription of Gottfried Keller's "Das Fähnlein der sieben Aufrechten":[24]

ˈkɑinə ˈreːdə, virt ˈniçts daˈraˑus! zɑːktə *ˈheːdigər ˈkurts.
(»Keine Rede, wird nichts daraus!« sagte Hediger kurz.)

This diacritic isn't often used.[25]


The asterisk has many uses in mathematics. The following list highlights some common uses and is not exhaustive.

  • An arbitrary point in some set. Seen, for example, when computing Riemann sums or when contracting a simply connected group to the singleton set { ∗ }.
as a unary operator, denoted in prefix notation
  • The Hodge star operator on vector spaces .
as a unary operator, written as a subscript
as a unary operator, written as a superscript
as a binary operator, in infix notation

The asterisk is used in all branches of mathematics to designate a correspondence between two quantities denoted by the same letter – one with the asterisk and one without.

Mathematical typography

In fine mathematical typography, the Unicode character U+2217 ASTERISK OPERATOR (in HTML, ∗) is available. This character also appeared in the position of the regular asterisk in the PostScript symbol character set in the Symbol font included with Windows and Macintosh operating systems and with many printers. It should be used in fine typography for a large asterisk that lines up with the other mathematical operators.


Religious texts

  • In the Geneva Bible and the King James Bible, an asterisk is used to indicate a marginal comment or scripture reference.
  • In the Leeser Bible, an asterisk is used to mark off the seven subdivisions of the weekly Torah portion. It is also used to mark the few verses to be repeated by the reader of the Haftara.
  • In American printings of the Book of Common Prayer, an asterisk is used to divide a verse of a Psalm in two portions for responsive reading. British printings use a spaced colon (" : ") for the same purpose.

Star of Life

A Star of Life (⚕) may be used as an alternative to cross or crescent symbols on ambulances.

Statistical results

In many scientific publications, the asterisk is employed as a shorthand to denote the statistical significance of results when testing hypotheses. When the likelihood that a result occurred by chance alone is below a certain level, one or more asterisks are displayed. Popular significance levels are <0.05 (*), <0.01 (**), and <0.001 (***).


On a Touch-Tone telephone keypad, the asterisk (called star, or less commonly, palm or sextile)[27] is one of the two special keys (the other is the number sign (pound sign or hash, hex or, less commonly, octothorp[27] or square)), and is found to the left of the zero. They are used to navigate menus in Touch-Tone systems such as Voice mail, or in Vertical service codes.


  • The asterisk is used to call out a footnote, especially when there is only one on the page. Less commonly, multiple asterisks are used to denote different footnotes on a page (i.e., *, **, ***). Typically, an asterisk is positioned after a word or phrase and preceding its accompanying footnote. Other characters are also used for this purpose, including , , superscript numbers (as in Wikipedia), etc. In marketing and advertising, asterisks or other symbols are used to refer readers discreetly to terms or conditions for a certain statement, the "small print".
  • In English-language typography the asterisk is placed after all other punctuation marks (for example, commas, colons, or periods) except for the dash.[28][29]
  • Three spaced asterisks centered on a page may represent a jump to a different scene, thought, or section.
  • A group of three asterisks arranged in a triangular formation is called an asterism.
  • One or more asterisks may be used as censorship over all or part of a word.
  • Asterisks are sometimes used as an alternative to typographical bullets to indicate items of a list.
  • Asterisks can be used in textual media to represent *emphasis* when bold or italic text is not available (e.g., Twitter, text messaging).
  • Asterisks may denote corrections to misspelling or misstatements in previous electronic messages, particularly when replacement or retraction of a previous writing is not possible, such as with "immediate delivery" messages or "instant messages" that can't be edited. Usually this takes the form of a message consisting solely of the corrected text, with an asterisk placed after to the correction. For example, one might send a message reading "morning*" to correct the misspelling in the message "I had a good mroning".
  • Bounding asterisks as "a kind of self-describing stage direction", as linguist Ben Zimmer has put it. For example, in "Another gas station robbery *sigh*", the writer uses *sigh* to express disappointment (but does not necessarily literally sigh).[30]


The Unicode standard has a variety of asterisk-like characters, compared in the table below. (Characters may display differently in different browsers and fonts.)

AsteriskAsterisk operatorHeavy asteriskSmall asteriskFull-width asteriskOpen-centre asterisk
Low asteriskArabic starEast Asian reference markTeardrop-spoked asteriskSixteen-pointed asterisk
AsteriskU+002A&#42;2A&ast; and &midast;
(HTML5 only)[31]
Combining Asterisk BelowU+0359&#857;CD 99 ͙
Arabic Five Pointed StarU+066D&#1645;D9 AD ٭
East Asian Reference MarkU+203B&#8251;E2 80 BB 
Flower Punctuation MarkU+2055&#8277;E2 81 95 
AsterismU+2042&#8258;E2 81 82 
Low AsteriskU+204E&#8270;E2 81 8E 
Two Asterisks Aligned VerticallyU+2051&#8273;E2 81 91 
Combining Asterisk AboveU+20F0&#8432;E2 83 B0 
Asterisk OperatorU+2217&#8727;E2 88 97&lowast; (HTML
and HTML5)
Circled Asterisk OperatorU+229B&#8859;E2 8A 9B&circledast; and
(HTML5 only)
Four Teardrop-Spoked AsteriskU+2722&#10018;E2 9C A2 
Four Balloon-Spoked AsteriskU+2723&#10019;E2 9C A3 
Heavy Four Balloon-Spoked AsteriskU+2724&#10020;E2 9C A4 
Four Club-Spoked AsteriskU+2725&#10021;E2 9C A5 
Heavy AsteriskU+2731&#10033;E2 9C B1 
Open Centre AsteriskU+2732&#10034;E2 9C B2 
Eight Spoked AsteriskU+2733&#10035;E2 9C B3 
Sixteen Pointed AsteriskU+273A&#10042;E2 9C BA 
Teardrop-Spoked AsteriskU+273B&#10043;E2 9C BB 
Open Centre Teardrop-Spoked AsteriskU+273C&#10044;E2 9C BC 
Heavy Teardrop-Spoked AsteriskU+273D&#10045;E2 9C BD 
Heavy Teardrop-Spoked Pinwheel AsteriskU+2743&#10051;E2 9D 83 
Balloon-Spoked AsteriskU+2749&#10057;E2 9D 89 
Six Teardrop-Spoked Propeller AsteriskU+274A&#10058;E2 9D 8A 
Heavy Eight Teardrop-Spoked Propeller AsteriskU+274B&#10059;E2 9D 8B 
Squared AsteriskU+29C6&#10694;E2 A7 86 
Equals With AsteriskU+2A6E&#10862;E2 A9 AE 
Slavonic AsteriskU+A673&#42611;EA 99 B3 
Small AsteriskU+FE61&#65121;EF B9 A1 
Full Width AsteriskU+FF0A&#65290;EF BC 8A 
Music Symbol Pedal Up MarkU+1D1AF&#119215;F0 9D 86 AF 𝆯
Tag AsteriskU+E002A&#917546;F3 A0 80 AA 
Light Five Spoked AsteriskU+1F7AF&#128943;F0 9F 9E AF 🞯
Medium Five Spoked AsteriskU+1F7B0&#128944;F0 9F 9E B0 🞰
Bold Five Spoked AsteriskU+1F7B1&#128945;F0 9F 9E B1 🞱
Heavy Five Spoked AsteriskU+1F7B2&#128946;F0 9F 9E B2 🞲
Very Heavy Five Spoked AsteriskU+1F7B3&#128947;F0 9F 9E B3 🞳
Extremely Heavy Five Spoked AsteriskU+1F7B4&#128948;F0 9F 9E B4 🞴
Light Six Spoked AsteriskU+1F7B5&#128949;F0 9F 9E B5 🞵
Medium Six Spoked AsteriskU+1F7B6&#128950;F0 9F 9E B6 🞶
Bold Six Spoked AsteriskU+1F7B7&#128951;F0 9F 9E B7 🞷
Heavy Six Spoked AsteriskU+1F7B8&#128952;F0 9F 9E B8 🞸
Very Heavy Six Spoked AsteriskU+1F7B9&#128953;F0 9F 9E B9 🞹
Extremely Heavy Six Spoked AsteriskU+1F7BA&#128954;F0 9F 9E BA 🞺
Light Eight Spoked AsteriskU+1F7BB&#128955;F0 9F 9E BB 🞻
Medium Eight Spoked AsteriskU+1F7BC&#128956;F0 9F 9E BC 🞼
Bold Eight Spoked AsteriskU+1F7BD&#128957;F0 9F 9E BD 🞽
Heavy Eight Spoked AsteriskU+1F7BE&#128958;F0 9F 9E BE 🞾
Very Heavy Eight Spoked AsteriskU+1F7BF&#128959;F0 9F 9E BF 🞿

See also



    27. Basic differences between the Asterisk And FreeSWITCH[32]

    1. "asterisk", American Heritage Dictionary
    2. ἀστερίσκος, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus
    3. Seddon, Tony (2016). Essential Type: An Illustrated Guide to Understanding and Using Fonts. Yale University Press. ISBN 9780300222371.
    4. D'Arcy, Patrick (June 7, 2017). "32 mysterious symbols made by early humans". Retrieved June 2, 2019.
    5. Kathleen McNamee, "Sigla," in Sigla and Select Marginalia in Greek Literary Papyri (Brussels: Fondation Egyptologique Reine Elisabeth, 1992), 9.
    6. McNamee, "Sigla," 12.
    7. Parkes, "The Technology of Printing and the Stabilization of the Symbols," 50-64.
    8. Robert Bringhurst, "Asterisk," in The Elements of Typographic Style: Version 3.2 (Vancouver, BC: Hartley & Marks, 2008), 303.
    9. Houston, Keith (2013). Shady Characters. W. W. Norton & Company, Inc. p. 98. ISBN 978-1-846-14647-3.
    10. Werner, Edgar (1997). Englishes Around the World: Caribbean, Africa, Asia, Australasia. p. 284.
    11. Wutiolarn, Nopsarun, and Damrong Attaprechakul. A study of nonstandard orthography and vowel omission in an international online game: AuditionSEA. Language Institute, Thammasat University, 2012.
    12. See e.g. Allen Barra (2007-05-27). "An Asterisk is very real, even when it's not". New York Times.
    13. Barra, Allen (October 3, 2001). "The myth of Maris' asterisk". Retrieved November 15, 2014.
    14. Mark McGwire comes clean, admits steroids use -
    15. See e.g. Michael Wilbon (2004-12-04). "Tarnished records deserve an Asterisk". Washington Post. p. D10.
    16. "Scoring Baseball: Advanced Symbols". Baseball Almanac. Retrieved 2018-09-18.
    17. "". Retrieved 2018-09-18.
    18. Archived 2011-09-29 at the Wayback Machine, Ad Council, August 8, 2008
    19. Collister, Lauren B. (2011-02-01). "*-repair in Online Discourse" (PDF). Journal of Pragmatics. 43 (3): 918–921. doi:10.1016/j.pragma.2010.09.025.
    20. White, F. M. Fluid Mechanics, Fourth Ed. WCB McGraw Hill.
    21. "Scrabble Glossary". Tucson Scrabble Club. Archived from the original on 2011-08-30. Retrieved 2012-02-06.
    22. McCarthy, John J. (2007). "What Is Optimality Theory?". Language and Linguistics Compass. 1 (4): 268. doi:10.1111/j.1749-818X.2007.00018.x.
    23. International Phonetic Association (2010). "The Principles of the International Phonetic Association (1949)". Journal of the International Phonetic Association. 40 (3): 317. doi:10.1017/S0025100311000089.
    24. Perrett, W. (1921). "dɔytʃ". Textes Pour Nos élèves. Association Phonétique Internationale. 1: 4.
    25. Pullum, Geoffrey K.; Ladusaw, William A. (1996). "Asterisk". Phonetic Symbol Guide (2nd ed.). Chicago: University of Chicago Press. p. 228.
    26. "Complex Conjugate - from Wolfram MathWorld". 2018-09-12. Retrieved 2018-09-18.
    27. US 3920926
    28. United Nations Editorial Manual Online, IX. Footnote indicators
    29. Fogarty, Mignon (November 15, 2012), "How to Use an Asterisk,"
    30. Zimmer, Ben. "The cyberpragmatics of bounding asterisks". Language Log, University of Pennsylvania. Retrieved 24 August 2013.
    31. HTML5 is the only version of HTML that has a named entity for the asterisk: "The following sections present the complete lists of character entity references.") and ("ast;").
    32. "FreeSWITCH Vs Asterisk". 2016-05-15. Retrieved 2018-09-18.
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