View source for Symbol (typeface)

{{Short description|Typeface for mathematical typesetting}}
'''Symbol''' (which would appear as '''Σψμβολ''' if the name of the font is written in the font itself) is one of the four standard fonts available on all [[PostScript]]-based printers, starting with [[Apple Inc.|Apple]]'s original [[LaserWriter]] (1985). It contains a complete unaccented [[Greek alphabet]] (upper and lower case) and a selection of commonly used mathematical symbols. Insofar as it fits into any standard classification, it is a [[serif]] font designed in the style of [[Times New Roman]].

Due to its non-standard character set, lack of diacritical characters, and type design inappropriate for continuous text, Symbol cannot easily be used for setting [[Greek language]] text, though it has been used for that purpose in the absence of proper Greek fonts. Its primary purpose is to typeset [[mathematics|mathematical]] expressions.

There was also an earlier ''Symbol'' designed in 1933 by [[Carl Albert Fahrenwaldt]] for [[Schriftguss AG|Schriftguss Type Foundry]].  It was a font of decorative initials based on his roman font ''[[Minister (typeface)|Minister]]''.<ref>Jaspert, W. Pincus, W. Turner Berry and A.F. Johnson, ''The Encyclopedia of Type Faces.'' Blandford Press Lts.: 1953, 1983, {{ISBN|0-7137-1347-X}}, p. 154-5.</ref>

==Encoding==
{{Infobox character encoding
|name = Symbol Encoding
|alias = x-mac-symbol, ibm-1038
|image = Symbol-infobox-paths.svg
|definitions = [https://unicode.org/Public/MAPPINGS/VENDORS/ADOBE/symbol.txt Adobe Symbol]<br />[https://unicode.org/Public/MAPPINGS/VENDORS/APPLE/SYMBOL.TXT Mac OS Symbol]
|caption = Code page layout (in [[DejaVu fonts]]). The vacant spot marked by the red Bowen knot (⌘) may be an Apple logo in some variants.
|lang = [[Mathematical notation]], [[Greek language|Greek]] (partial)
|otherrelated = [[ISO 646]]<br/>'''Other PS pi fonts:''' [[Zapf Dingbats]]
|classification = [[PostScript fonts#Core Font Set|PostScript core]] [[pi font]] mapped over [[extended ASCII]]
}}
The font was created by Adobe and has its own [[character encoding]], with the Greek letters arranged according to similar Latin letters ([[Chi (letter)|Chi]] = [[C]], etc.).  The document describing the mapping to Unicode code points<ref>{{cite web |url=http://unicode.org/Public/MAPPINGS/VENDORS/ADOBE/symbol.txt |title=Adobe Symbol Encoding to Unicode |date=30 March 1999 |publisher=[[Unicode.org]] }}</ref> was created before several of the characters were added to Unicode, so the original mapping assigns several of the characters to the [[Private Use Area]] (PUA). A newer mapping table for [[Apple Inc.|Apple]]'s version of the font<ref>{{cite web |url=http://unicode.org/Public/MAPPINGS/VENDORS/APPLE/SYMBOL.TXT |title=Map from Mac OS Symbol character set to Unicode 4.0 and later |date=5 April 2005 |publisher=Unicode.org }}</ref> uses more recently introduced Unicode code points instead. The table below mostly follows the Apple mapping.

IBM calls the encoding '''Code page 1038''', although the code page definition predates the addition of the [[euro sign]], and uses 0xA0 for a [[figure space|numeric space]] character.<ref name="cp01038z">{{citation|mode=cs1 |archive-url=https://web.archive.org/web/20150708120330id_/http://www-03.ibm.com/systems/resources/systems_i_software_globalization_pdf_cp01038z.pdf |archive-date=2015-07-08 |url=http://www-03.ibm.com/systems/resources/systems_i_software_globalization_pdf_cp01038z.pdf |title=Code Page 01038 |author=IBM |author-link=IBM |url-status=dead}}</ref><ref name="cs01310">{{cite web |url=https://public.dhe.ibm.com/software/globalization/gcoc/attachments/CS01310.txt |title=Symbols - Personal Computer |id=GCSGID 01310 |date=1996 |work=REGISTRY, Graphic Character Sets and Code Pages |author=IBM |author-link=IBM}}</ref>

Beyond the use of Private Use Area code points, Adobe and Apple have a few other minor differences in code point assignments.  Character 0x27 (called "suchthat" in the Adobe document) is assigned by Adobe to U+220B (∋, CONTAINS AS MEMBER) but by Apple to U+220D (∍, SMALL CONTAINS AS MEMBER), which more closely resembles the symbol usually used for ''such that''. Apple also introduces the Apple logo as PUA code point [[U+F8FF]] for character 0xF0, a position not used in the original Adobe font.

Lowercase Greek letters appear in [[italic type|italics]] in many older versions of Symbol.  While both Adobe and Apple agree on assigning characters 0x66 and 0x6A respectively to Unicode code points {{unichar|03C6|GREEK SMALL LETTER PHI}} and {{unichar|03D5|GREEK PHI SYMBOL}}, some versions of the font interchange these two symbols.<ref name="cp01038z" />

Mapping of the angle bracket characters at 0xE1 and 0xF1 can vary. Adobe uses code points U+2329 and U+232A ({{not a typo|&#x2329; and &#x232A;}}<!-- Non-NFC forms being compared to NFC forms later in the sentence; don't convert these from entities. -->), whereas Apple uses U+3008 and U+3009 (〈 and 〉). The characters U+3008 and U+3009 are [[Halfwidth and fullwidth forms|fullwidth punctuation]], usually rendered with additional spacing so as to align them within [[quad (typography)|em squares]], as appropriate in [[East Asia]]n typography.<ref name="L2-01-033" /> The characters U+2329 and U+232A, however, are [[Unicode equivalence|canonically equivalent]] to U+3008 and U+3009, and are therefore changed to the latter under both NFC and NFKC [[Unicode normalisation]].<ref name="pr122" /> This equivalence is sometimes considered mistaken,<ref name="L2-01-033">{{cite web |url=https://www.unicode.org/L2/L2001/01033-addbrackets.htm |title=Disunify braces/brackets for math, computing science, and Z notation from similar-looking CJK braces/brackets |first=Kent |last=Karlsson |date=2001-01-16 |id=L2/01-033}}</ref> but cannot be changed under the Unicode stability policy.<ref>{{cite web |url=https://unicode.org/policies/stability_policy.html |title=Unicode Character Encoding Stability Policies |author=Unicode Consortium |author-link=Unicode Consortium}}</ref> For comparison, the fullwidth Latin characters in the [[Halfwidth and Fullwidth Forms (Unicode block)|Halfwidth and Fullwidth Forms]] block are mapped to their ASCII equivalents using compatibility mapping,<ref>{{cite web |url=https://unicode.org/reports/tr11/#Definitions |title=Unicode Standard Annex #11: East Asian Width |first=Ken |last=Lunde |date=2020-01-18}}</ref> not canonical equivalence, and therefore only changed by NFKC and NFKD normalisation. The alternatives U+27E8 and U+27E9 (⟨ and ⟩) are now preferred for mathematical use.<ref name="pr122">{{cite web |url=https://unicode.org/review/pr-122.html |title=Public Review Issue #122: Proposal for Additional Deprecated Characters |author=Unicode Technical Committee |publisher=[[Unicode Consortium]] }}</ref>

<!--NOTE: The table should favour the Apple mapping at http://unicode.org/Public/MAPPINGS/VENDORS/APPLE/SYMBOL.TXT, as it makes less use of the PUA -->

{|{{chset-table-header1|Symbol (typeface)}}
|-
|{{chset-left1|0x}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|-
|{{chset-left1|1x}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|- 
|{{chset-left1|2x}}
|{{chset-ctrl1|U+0020 SPACE|&nbsp;[[Space character|SP]]&nbsp;}}
|{{chset-cell1|U+0021 EXCLAMATION MARK|[[!]]}}
|{{chset-cell1|u=2200|U+2200 FOR ALL|[[&#x2200;]]}}
|{{chset-cell1|U+0023 NUMBER SIGN|[[Number sign|#]]}}
|{{chset-cell1|u=2203|U+2203 THERE EXISTS|[[&#x2203;]]}}
|{{chset-cell1|U+0025 PERCENT SIGN|[[Percent sign|%]]}}
|{{chset-cell1|U+0026 AMPERSAND|[[Ampersand|&]]}}
|{{chset-cell1|u=220D|U+220D SMALL CONTAINS AS MEMBER|[[&#x220d;]]}}
|{{chset-cell1|U+0028 LEFT PARENTHESIS|[[(]]}}
|{{chset-cell1|U+0029 RIGHT PARENTHESIS|[[)]]}}
|{{chset-cell1|U+002A ASTERISK|[[Asterisk|*]]}}
|{{chset-cell1|U+002B PLUS SIGN|[[Plus and minus signs|+]]}}
|{{chset-cell1|U+002C COMMA|[[Comma (punctuation)|,]]}}
|{{chset-cell1|U+002D HYPHEN-MINUS|[[Plus and minus signs|&minus;]]}}
|{{chset-cell1|U+002E FULL STOP|[[Full stop|.]]}}
|{{chset-cell1|U+002F SOLIDUS|[[Slash (punctuation)|/]]}}
|-
|{{chset-left1|3x}}
|{{chset-cell1|U+0030 DIGIT ZERO|[[0]]}}
|{{chset-cell1|U+0031 DIGIT ONE|[[1]]}}
|{{chset-cell1|U+0032 DIGIT TWO|[[2]]}}
|{{chset-cell1|U+0033 DIGIT THREE|[[3]]}}
|{{chset-cell1|U+0034 DIGIT FOUR|[[4]]}}
|{{chset-cell1|U+0035 DIGIT FIVE|[[5]]}}
|{{chset-cell1|U+0036 DIGIT SIX|[[6]]}}
|{{chset-cell1|U+0037 DIGIT SEVEN|[[7]]}}
|{{chset-cell1|U+0038 DIGIT EIGHT|[[8]]}}
|{{chset-cell1|U+0039 DIGIT NINE|[[9]]}}
|{{chset-cell1|U+003A COLON|[[Colon (punctuation)|:]]}}
|{{chset-cell1|U+003B SEMICOLON|[[Semicolon|;]]}}
|{{chset-cell1|U+003C LESS-THAN SIGN|[[Less-than sign|<]]}}
|{{chset-cell1|U+003D EQUALS SIGN|[[Equals sign|=]]}}
|{{chset-cell1|U+003E GREATER-THAN SIGN|[[Greater-than sign|>]]}}
|{{chset-cell1|U+003F QUESTION MARK|[[Question mark|?]]}}
|-
|{{chset-left1|4x}}
|{{chset-cell1|u=2245|U+2245 APPROXIMATELY EQUAL TO|[[Approximation#Unicode|≅]]}}
|{{chset-cell1|u=0391|U+0391 GREEK CAPITAL LETTER ALPHA|[[Alpha|Α]]}}
|{{chset-cell1|u=0392|U+0392 GREEK CAPITAL LETTER BETA|[[Beta|Β]]}}
|{{chset-cell1|u=03A7|U+03A7 GREEK CAPITAL LETTER CHI|[[Chi (letter)|Χ]]}}
|{{chset-cell1|u=0394|U+0394 GREEK CAPITAL LETTER DELTA|[[Delta (letter)|Δ]]}}
|{{chset-cell1|u=0395|U+0395 GREEK CAPITAL LETTER EPSILON|[[Epsilon|Ε]]}}
|{{chset-cell1|u=03A6|U+03A6 GREEK CAPITAL LETTER PHI|[[Phi|Φ]]}}
|{{chset-cell1|u=0393|U+0393 GREEK CAPITAL LETTER GAMMA|[[Gamma|Γ]]}}
|{{chset-cell1|u=0397|U+0397 GREEK CAPITAL LETTER ETA|[[Eta|Η]]}}
|{{chset-cell1|u=0399|U+0399 GREEK CAPITAL LETTER IOTA|[[Iota|Ι]]}}
|{{chset-cell1|u=03D1|U+03D1 GREEK THETA SYMBOL|[[Theta|ϑ]]}}
|{{chset-cell1|u=039A|U+039A GREEK CAPITAL LETTER KAPPA|[[Kappa|Κ]]}}
|{{chset-cell1|u=039B|U+039B GREEK CAPITAL LETTER LAMDA|[[Lambda|Λ]]}}
|{{chset-cell1|u=039C|U+039C GREEK CAPITAL LETTER MU|[[Mu (letter)|Μ]]}}
|{{chset-cell1|u=039D|U+039D GREEK CAPITAL LETTER NU|[[Nu (letter)|Ν]]}}
|{{chset-cell1|u=039F|U+039F GREEK CAPITAL LETTER OMICRON|[[Omicron|Ο]]}}
|-
|{{chset-left1|5x}}
|{{chset-cell1|u=03A0|U+03A0 GREEK CAPITAL LETTER PI|[[Pi (letter)|Π]]}}
|{{chset-cell1|u=0398|U+0398 GREEK CAPITAL LETTER THETA|[[Theta|Θ]]}}
|{{chset-cell1|u=03A1|U+03A1 GREEK CAPITAL LETTER RHO|[[Rho|Ρ]]}}
|{{chset-cell1|u=03A3|U+03A3 GREEK CAPITAL LETTER SIGMA|[[Sigma|Σ]]}}
|{{chset-cell1|u=03A4|U+03A4 GREEK CAPITAL LETTER TAU|[[Tau|Τ]]}}
|{{chset-cell1|u=03A5|U+03A5 GREEK CAPITAL LETTER UPSILON|[[Upsilon|Υ]]}}
|{{chset-cell1|u=03C2|U+03C2 GREEK SMALL LETTER FINAL SIGMA|[[Sigma|ς]]}}
|{{chset-cell1|u=03A9|U+03A9 GREEK CAPITAL LETTER OMEGA|[[Omega|Ω]]}}
|{{chset-cell1|u=039E|U+039E GREEK CAPITAL LETTER XI|[[Xi (letter)|Ξ]]}}
|{{chset-cell1|u=03A8|U+03A8 GREEK CAPITAL LETTER PSI|[[Psi (letter)|Ψ]]}}
|{{chset-cell1|u=0396|U+0396 GREEK CAPITAL LETTER ZETA|[[Zeta|Ζ]]}}
|{{chset-cell1|U+005B LEFT SQUARE BRACKET|[[Bracket#Square brackets|[]]}}
|{{chset-cell1|u=2234|U+2234 THEREFORE|[[∴]]}}
|{{chset-cell1|U+005D RIGHT SQUARE BRACKET|[[Bracket#Square brackets|&#93;]]}}
|{{chset-cell1|u=22A5|U+22A5 UP TACK|[[⊥]]}}
|{{chset-cell1|U+005F LOW LINE|[[Underscore|_]]}}
|-
|{{chset-left1|6x}}
|{{chset-cell1|U+203E OVERLINE|{{PUA|[[‾]]}}|96|fn={{efn|{{anchor|Radicalex}}The character at 0x60 does not appear in Unicode.  It is described in the Adobe map as "[[Nth root|RADICAL]] [[Vinculum (symbol)|EXTENDER]]", with the Adobe glyph name "radicalex", and is mapped to the PUA code point U+F8E5.  It is an over-bar for extending the radical sign over the operands of the radical operator.  Some versions of the font implement this as a non-spacing character so that it can be combined (like non-spacing diacritical marks) with the operands it covers. The Unicode overbar character is shown here.}}}}
|{{chset-cell1|u=03B1|U+03B1 GREEK SMALL LETTER ALPHA|[[Alpha|α]]}}
|{{chset-cell1|u=03B2|U+03B2 GREEK SMALL LETTER BETA|[[Beta|β]]}}
|{{chset-cell1|u=03C7|U+03C7 GREEK SMALL LETTER CHI|[[Chi (letter)|χ]]}}
|{{chset-cell1|u=03B4|U+03B4 GREEK SMALL LETTER DELTA|[[Delta (letter)|δ]]}}
|{{chset-cell1|u=03B5|U+03B5 GREEK SMALL LETTER EPSILON|[[Epsilon|ε]]}}
|{{chset-cell1|u=03C6|U+03C6 GREEK SMALL LETTER PHI|[[Phi|φ]]}}
|{{chset-cell1|u=03B3|U+03B3 GREEK SMALL LETTER GAMMA|[[Gamma|γ]]}}
|{{chset-cell1|u=03B7|U+03B7 GREEK SMALL LETTER ETA|[[Eta|η]]}}
|{{chset-cell1|u=03B9|U+03B9 GREEK SMALL LETTER IOTA|[[Iota|ι]]}}
|{{chset-cell1|u=03D5|U+03D5 GREEK PHI SYMBOL|[[Phi (letter)|ϕ]]}}
|{{chset-cell1|u=03BA|U+03BA GREEK SMALL LETTER KAPPA|[[Kappa|κ]]}}
|{{chset-cell1|u=03BB|U+03BB GREEK SMALL LETTER LAMDA|[[Lambda|λ]]}}
|{{chset-cell1|u=03BC|U+03BC GREEK SMALL LETTER MU|[[Mu (letter)|μ]]}}
|{{chset-cell1|u=03BD|U+03BD GREEK SMALL LETTER NU|[[Nu (letter)|ν]]}}
|{{chset-cell1|u=03BF|U+03BF GREEK SMALL LETTER OMICRON|[[Omicron|ο]]}}
|-
|{{chset-left1|7x}}
|{{chset-cell1|u=03C0|U+03C0 GREEK SMALL LETTER PI|[[Pi (letter)|π]]}}
|{{chset-cell1|u=03B8|U+03B8 GREEK SMALL LETTER THETA|[[Theta|θ]]}}
|{{chset-cell1|u=03C1|U+03C1 GREEK SMALL LETTER RHO|[[Rho|ρ]]}}
|{{chset-cell1|u=03C3|U+03C3 GREEK SMALL LETTER SIGMA|[[Sigma|σ]]}}
|{{chset-cell1|u=03C4|U+03C4 GREEK SMALL LETTER TAU|[[Tau|τ]]}}
|{{chset-cell1|u=03C5|U+03C5 GREEK SMALL LETTER UPSILON|[[Upsilon|υ]]}}
|{{chset-cell1|u=03D6|U+03D6 GREEK PI SYMBOL|[[Pi (letter)|ϖ]]}}
|{{chset-cell1|u=03C9|U+03C9 GREEK SMALL LETTER OMEGA|[[Omega|ω]]}}
|{{chset-cell1|u=03BE|U+03BE GREEK SMALL LETTER XI|[[Xi (letter)|ξ]]}}
|{{chset-cell1|u=03C8|U+03C8 GREEK SMALL LETTER PSI|[[Psi (letter)|ψ]]}}
|{{chset-cell1|u=03B6|U+03B6 GREEK SMALL LETTER ZETA|[[Zeta|ζ]]}}
|{{chset-cell1|U+007B LEFT CURLY BRACKET|[[Bracket|{]]}}
|{{chset-cell1|U+007C VERTICAL LINE|[[Vertical bar|{{pipe}}]]}}
|{{chset-cell1|U+007D RIGHT CURLY BRACKET|[[Bracket|}]]}}
|{{chset-cell1|U+007E TILDE|[[Tilde|~]]}}
|{{chset-cell1|||style=background:#DDD}}
|-
|{{chset-left1|8x}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|-
|{{chset-left1|9x}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|{{chset-cell1|||style=background:#DDD}}
|-
|{{chset-left1|Ax}}
|{{chset-cell1|u=20AC|U+20AC EURO SIGN|[[euro sign|€]]|160|fn={{efn|Before [[Mac OS 8|Mac OS 8.5]], the character 0xA0 was unassigned. IBM code page 1038 includes a whitespace character specified in this position with mnemonic "NSP" and GCGID SP310000.<ref name="cp01038z"/> This GCGID refers to a [[numeric space]] (i.e. U+2007); contrast SP300000 for a [[required space]].<ref name="cs01310" />}}}}
|{{chset-cell1|u=03D2|U+03D2 GREEK UPSILON WITH HOOK SYMBOL|[[ϒ]]}}
|{{chset-cell1|u=2032|U+2032 PRIME|[[&#x2032;]]}}
|{{chset-cell1|u=2264|U+2264 LESS-THAN OR EQUAL TO|[[Inequality (mathematics)|&#x2264;]]}}
|{{chset-cell1|u=2044|U+2044 FRACTION SLASH|[[&#x2044;]]}}
|{{chset-cell1|u=221E|U+221E INFINITY|[[&#x221e;]]}}
|{{chset-cell1|u=0192|U+0192 LATIN SMALL LETTER F WITH HOOK|[[&#x0192;]]}}
|{{chset-cell1|u=2663|U+2663 BLACK CLUB SUIT|[[&#x2663;]]}}
|{{chset-cell1|u=2666|U+2666 BLACK DIAMOND SUIT|[[&#x2666;]]}}
|{{chset-cell1|u=2665|U+2665 BLACK HEART SUIT|[[&#x2665;]]}}
|{{chset-cell1|u=2660|U+2660 BLACK SPADE SUIT|[[&#x2660;]]}}
|{{chset-cell1|u=2194|U+2194 LEFT RIGHT ARROW|[[&#x2194;]]}}
|{{chset-cell1|u=2190|U+2190 LEFTWARDS ARROW|[[Arrow (symbol)|&#x2190;]]}}
|{{chset-cell1|u=2191|U+2191 UPWARDS ARROW|[[Arrow (symbol)|&#x2191;]]}}
|{{chset-cell1|u=2192|U+2192 RIGHTWARDS ARROW|[[Arrow (symbol)|&#x2192;]]}}
|{{chset-cell1|u=2193|U+2193 DOWNWARDS ARROW|[[Arrow (symbol)|&#x2193;]]}}
|-
|{{chset-left1|Bx}}
|{{chset-cell1|U+00B0 DEGREE SIGN|[[°]]}}
|{{chset-cell1|U+00B1 PLUS-MINUS SIGN|[[Plus-or-minus sign|±]]}}
|{{chset-cell1|u=2033|U+2033 DOUBLE PRIME|[[&#x2033;]]}}
|{{chset-cell1|u=2265|U+2265 GREATER-THAN OR EQUAL TO|[[Inequality (mathematics)|&#x2265;]]}}
|{{chset-cell1|u=00D7|U+00D7 MULTIPLICATION SIGN|[[×]]}}
|{{chset-cell1|u=221D|U+221D PROPORTIONAL TO|[[&#x221d;]]}}
|{{chset-cell1|u=2202|U+2202 PARTIAL DIFFERENTIAL|[[&#x2202;]]}}
|{{chset-cell1|u=2022|U+2022 BULLET|[[&#x2022;]]}}
|{{chset-cell1|u=00F7|U+00F7 DIVISION SIGN|[[&#x00f7;]]}}
|{{chset-cell1|u=2260|U+2260 NOT EQUAL TO|[[&#x2260;]]}}
|{{chset-cell1|u=2261|U+2261 IDENTICAL TO|[[Triple bar|&#x2261;]]}}
|{{chset-cell1|u=2248|U+2248 ALMOST EQUAL TO|[[&#x2248;]]}}
|{{chset-cell1|u=2026|U+2026 HORIZONTAL ELLIPSIS|[[&#x2026;]]}}
|{{chset-cell1|u=23D0|U+23D0 VERTICAL LINE EXTENSION|{{PUA|[[⏐]]}}}}
|{{chset-cell1|u=23AF|U+23AF HORIZONTAL LINE EXTENSION|{{PUA|[[⎯]]}}}}
|{{chset-cell1|u=21B5|U+21B5 DOWNWARDS ARROW WITH CORNER LEFTWARDS|[[Arrow (symbol)|&#x21b5;]]}}
|-
|{{chset-left1|Cx}}
|{{chset-cell1|u=2135|U+2135 ALEF SYMBOL|[[&#x2135;]]}}
|{{chset-cell1|u=2111|U+2111 BLACK-LETTER CAPITAL I|[[&#x2111;]]}}
|{{chset-cell1|u=211C|U+211C BLACK-LETTER CAPITAL R|[[&#x211c;]]}}
|{{chset-cell1|u=2118|U+2118 SCRIPT CAPITAL P|[[&#x2118;]]}}
|{{chset-cell1|u=2297|U+2297 CIRCLED TIMES|[[&#x2297;]]|196|}}
|{{chset-cell1|u=2295|U+2295 CIRCLED PLUS|[[Exclusive or|&#x2295;]]}}
|{{chset-cell1|u=2205|U+2205 EMPTY SET|[[&#x2205;]]}}
|{{chset-cell1|u=2229|U+2229 INTERSECTION|[[&#x2229;]]}}
|{{chset-cell1|u=222A|U+222A UNION|[[&#x222a;]]}}
|{{chset-cell1|u=2283|U+2283 SUPERSET OF|[[&#x2283;]]}}
|{{chset-cell1|u=2287|U+2287 SUPERSET OF OR EQUAL TO|[[&#x2287;]]}}
|{{chset-cell1|u=2284|U+2284 NOT A SUBSET OF|[[&#x2284;]]}}
|{{chset-cell1|u=2282|U+2282 SUBSET OF|[[&#x2282;]]}}
|{{chset-cell1|u=2288|U+2286 SUBSET OF OR EQUAL TO|[[&#x2288;]]}}
|{{chset-cell1|u=2208|U+2208 ELEMENT OF|[[&#x2208;]]}}
|{{chset-cell1|u=2209|U+2209 NOT AN ELEMENT OF|[[&#x2209;]]}}
|-
|{{chset-left1|Dx}}
|{{chset-cell1|u=2220|U+2220 ANGLE|[[&#x2220;]]}}
|{{chset-cell1|u=2207|U+2207 NABLA|[[&#x2207;]]}}
|{{chset-cell1|U+00AE REGISTERED SIGN|{{serif|[[®]]}}|210|fn={{efn|name=fn210|The characters ®, ©, and ™ are encoded twice: one version has [[serif]]s, the other is [[sans-serif]]. The Adobe mapping uses PUA for all six characters to ensure that the presence or absence of serifs is observed, assigning the serif versions to U+F6DA, U+F6D9 and U+F6DB and the sans-serif versions to U+F8E8, U+F8E9 and U+F8EA respectively. The Apple mapping assigns the serif versions to the standard Unicode code points. Earlier versions of the Apple mapping<ref name="corpchar">{{cite web|url=https://unicode.org/Public/MAPPINGS/VENDORS/APPLE/CORPCHAR.TXT|title=CORPCHAR.TXT: Registry (external version) of Apple use of Unicode corporate-zone characters.|author=Apple, Inc.|publisher=Unicode Consortium}}</ref> assigned the sans-serif versions to the same codepoints as Adobe, but the current version assigns the sans-serif versions to sequences consisting of the standard codepoints followed by the private use character U+F87F as a "transcoding hint".<ref name="corpchar" />}}}}
|{{chset-cell1|U+00A9 COPYRIGHT SIGN|{{serif|[[©]]}}|211|fn={{efn|name=fn210}}}}
|{{chset-cell1|U+2122 TRADE MARK SIGN|{{serif|[[™]]}}|212|fn={{efn|name=fn210}}}}
|{{chset-cell1|u=220F|U+220F N-ARY PRODUCT|[[&#x220f;]]}}
|{{chset-cell1|u=221A|U+221A SQUARE ROOT|[[&#x221a;]]}}
|{{chset-cell1|u=22C5|U+22C5 DOT OPERATOR|[[&#x22c5;]]}}
|{{chset-cell1|u=00AC|U+00AC NOT SIGN|[[&#x00ac;]]}}
|{{chset-cell1|u=2227|U+2227 LOGICAL AND|[[&#x2227;]]}}
|{{chset-cell1|u=2228|U+2228 LOGICAL OR|[[&#x2228;]]}}
|{{chset-cell1|u=21D4|U+21D4 LEFT RIGHT DOUBLE ARROW|[[&#x21d4;]]}}
|{{chset-cell1|u=21D0|U+21D0 LEFTWARDS DOUBLE ARROW|[[&#x21d0;]]}}
|{{chset-cell1|u=21D1|U+21D1 UPWARDS DOUBLE ARROW|[[&#x21d1;]]}}
|{{chset-cell1|u=21D2|U+21D2 RIGHTWARDS DOUBLE ARROW|[[&#x21d2;]]}}
|{{chset-cell1|u=21D3|U+21D3 DOWNWARDS DOUBLE ARROW|[[&#x21d3;]]}}
|-
|{{chset-left1|Ex}}
|{{chset-cell1|u=25CA|U+25CA LOZENGE|[[&#x25ca;]]}}
|{{chset-cell1|u=3008|U+3008 LEFT ANGLE BRACKET|[[&#x3008;]]}}
|{{chset-cell1|U+00AE REGISTERED SIGN|{{{|<span style=font-family:sans-serif>[[®]]</span>}}}|226|fn={{efn|name=fn210}}}}
|{{chset-cell1|U+00A9 COPYRIGHT SIGN|{{{|<span style=font-family:sans-serif>[[©]]</span>}}}|227|fn={{efn|name=fn210}}}}
|{{chset-cell1|U+2122 TRADE MARK SIGN|{{{|<span style=font-family:sans-serif>[[™]]</span>}}}|228|fn={{efn|name=fn210}}}}
|{{chset-cell1|u=2211|U+2211 N-ARY SUMMATION|[[&#x2211;]]}}
|{{chset-cell1|u=239B|U+239B LEFT PARENTHESIS UPPER HOOK|[[&#x239b;]]}}
|{{chset-cell1|u=239C|U+239C LEFT PARENTHESIS EXTENSION|[[&#x239c;]]}}
|{{chset-cell1|u=239D|U+239D LEFT PARENTHESIS LOWER HOOK|[[&#x239d;]]}}
|{{chset-cell1|u=23A1|U+23A1 LEFT SQUARE BRACKET UPPER CORNER|[[&#x23a1;]]}}
|{{chset-cell1|u=23A2|U+23A2 LEFT SQUARE BRACKET EXTENSION|[[&#x23a2;]]}}
|{{chset-cell1|u=23A3|U+23A3 LEFT SQUARE BRACKET LOWER CORNER|[[&#x23a3;]]}}
|{{chset-cell1|u=23A7|U+23A7 LEFT CURLY BRACKET UPPER HOOK|[[&#x23a7;]]}}
|{{chset-cell1|u=23A8|U+23A8 LEFT CURLY BRACKET MIDDLE PIECE|[[&#x23a8;]]}}
|{{chset-cell1|u=23A9|U+23A9 LEFT CURLY BRACKET LOWER HOOK|[[&#x23a9;]]}}
|{{chset-cell1|u=23AA|U+23AA CURLY BRACKET EXTENSION|[[&#x23aa;]]}}
|-
|{{chset-left1|Fx}}
|{{chset-cell1|U+F8FF Private Use|[[File:Apple_logo_black.svg|12px]]|240|fn={{efn|name=fn240|Apple logo, found only in Apple's version (the code point is unused in Adobe's) and in other Apple fonts. The most similar glyph in cross-platform Unicode is {{sc2|U+1F34E}} 🍎&#xFE0E; {{sc2|RED APPLE}}. Compare the status of the Windows logo in [[Wingdings#Character set|the Wingdings font encoding]].}}}}
|{{chset-cell1|u=3009|U+3009 RIGHT ANGLE BRACKET|[[&#x3009;]]}}
|{{chset-cell1|u=222B|U+222B INTEGRAL|[[&#x222b;]]}}
|{{chset-cell1|u=2320|U+2320 TOP HALF INTEGRAL|[[&#x2320;]]}}
|{{chset-cell1|u=23AE|U+23AE INTEGRAL EXTENSION|[[&#x23ae;]]}}
|{{chset-cell1|u=2321|U+2321 BOTTOM HALF INTEGRAL|[[&#x2321;]]}}
|{{chset-cell1|u=239E|U+239E RIGHT PARENTHESIS UPPER HOOK|[[&#x239e;]]|246|}}
|{{chset-cell1|u=239F|U+239F RIGHT PARENTHESIS EXTENSION|[[&#x239f;]]|247|}}
|{{chset-cell1|u=23A0|U+23A0 RIGHT PARENTHESIS LOWER HOOK|[[&#x23a0;]]}}
|{{chset-cell1|u=23A4|U+23A4 RIGHT SQUARE BRACKET UPPER CORNER|[[&#x23a4;]]}}
|{{chset-cell1|u=23A5|U+23A5 RIGHT SQUARE BRACKET EXTENSION|[[&#x23a5;]]}}
|{{chset-cell1|u=23A6|U+23A6 RIGHT SQUARE BRACKET LOWER CORNER|[[&#x23a6;]]}}
|{{chset-cell1|u=23AB|U+23AB RIGHT CURLY BRACKET UPPER HOOK|[[&#x23ab;]]}}
|{{chset-cell1|u=23AC|U+23AC RIGHT CURLY BRACKET MIDDLE PIECE|[[&#x23ac;]]}}
|{{chset-cell1|u=23AD|U+23AD RIGHT CURLY BRACKET LOWER HOOK|[[&#x23ad;]]}}
|{{chset-cell1|||style=background:#DDD}}
|}
==HTML==
The use of the Symbol font in mathematical expressions was part of a [[W3C recommendation]] for HTML 4.
<ref>
{{cite web
|url=http://www.w3.org/TR/html401/sgml/entities.html#h-24.1
|title=Introduction to character entity references
|author=W3C
|date=1998
}}
</ref>
At the time of that original recommendation (December 1997), the only native way to display many mathematical symbols in [[HTML]] was a direct use of the "Symbol" font. Such explicit references are now strongly discouraged for new documents, but they survive in many existing pages on the [[Internet]]. Also, the Symbol font provides graphics that are specifically intended as components in the two-dimensional layout of mathematical expressions. Examples include upper and lower parts of brackets or integral signs and a square-root sign ''without'' a [[Vinculum (symbol)|vinculum]].

Until 2010 or so, the [[Unicode]] glyph U+221A corresponding to the square-root sign (the HTML [[List of XML and HTML character entity references|entity]] is named ''radic'' and has decimal code 8730) was usually rendered with a short built-in vinculum. That made it an inadequate graphical replacement for the original character from the Symbol font (itself designed around a slanted line extending all the way to the upper-right corner of the character box, without any spacing). The more recent renditions of the HTML ''radic'' entity (U+221A) no longer feature any vinculum and are thus more compatible with the standard graphical representation introduced in the Symbol font. Both styles of the square-root [[glyph]] (with or without a short vinculum) have the same disembodied ''meaning'', so the integrity of the [[Unicode]] repertoire is not compromised by this adjustment.

Full [[Legacy system|legacy]] support of the Symbol font is provided by major modern [[web browsers]] like [[Internet Explorer]] and [[Google Chrome]]. That support involves a specific handling of Adobe's special encoding, which is not properly implemented in at least some versions of other browsers, including [[Opera (web browser)|Opera]], [[Safari (web browser)|Safari]] and [[Firefox]].{{when|date=April 2020}} Such browsers do not correctly render [[Legacy system|legacy]] HTML documents that make explicit use of the Symbol font.

==See also==
*[[Aldo Novarese]]
*[[DEC Technical Character Set]]
*[[Lotus Multi-Byte Character Set]] (LMBCS)
*[[MathTime]]

== Notes ==
{{notelist}}

==References==
{{reflist}}

==Further reading==
* {{cite web |title=VENTURA_SYM |website=Eesti Keele Instituut (EKI) |location=Tallinn, Estonia |author=kiisu |url=http://www.eki.ee/letter/chardata.cgi?cp=VENTURA_SYM&1st=with+first+half&table=on |access-date=2017-07-17 |url-status=live |archive-url=https://web.archive.org/web/20170717184243/http://www.eki.ee/letter/chardata.cgi?cp=VENTURA_SYM&1st=with+first+half&table=on |archive-date=2017-07-17}}

{{Microsoft Windows Typefaces}}
{{MacOS typefaces}}
[[Category:Symbol typefaces]]
[[Category:Typefaces and fonts introduced in 1985]]