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===Typographic variants===
{{anchor|ℓ}}
{{redirect|ℓ|the azimuthal quantum number|Azimuthal quantum number}}
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In most [[sans-serif]] typefaces, the lowercase letter ''ell'' {{angbr|l}}, written {{char|as the [[glyph]] {{Sans-serif|{{char|l}}}}, may be difficult to distinguish from the uppercase letter "eye" {{angbr|[[I]]}} (written as the glyph {{Sans-serif|{{char|I}}}}); in some [[serif]] typefaces, the [[glyph]] {{charSerif|{{Serifchar|l}}}} may be confused with the glyph {{char|1}}, the digit ''[[1 (number)|one]]''. To avoid such confusion, some newer [[computer fontsfont]]s (such as [[Trebuchet MS]]) have a [[finial (typography)|finial]], a curve to the right at the bottom of the lowercase letter ''ell''. InOther thestyle [[blackletter]]variants typeare usedprovided in England[[script untiltypeface]]s theand seventeenth[[display century,<ref>{{Citetypeface]]s. bookAll |last=Dowdingthese |first=Geoffreyvariants |title=An introduction toof the history of printing types;letter anare illustrated summary of main stagesencoded in theUnicode developmentas of{{unichar|004C}} typeor design{{unichar|006C}}, from 1440allowing uppresentation to thebe presentchosen day: an aidaccording to type faceeach identificationcontext. |publisher=WaceFor |year=1962specialist |location=Clerkenwellmathematical [London]and |pages=5}}</ref>{{efn|Blackletterscientific persisteduse, inthere Germanyare untila thenumber earlyof 1940s. Seededicated [[Antiqua–Fraktur disputecodepoint]]}}s in the letter[[Mathematical LAlphanumeric isSymbols written as the render <math>\mathfrak{L}</math>block]].
Another means of reducing such confusion is to use symbol {{char|ℓ}}, which is a [[cursive]], handwriting-style lowercase form of the letter "ell";. thisIn form is seen in European road signsJapan and advertisements. In JapanKorea, for example, this is the symbol for the [[Litre|liter]]. (The [[International Committee for Weights and Measures]] recommends using {{char|{{serif|L}}}} or {{char|{{serif|l}}}} for the liter,<ref name="BIPM2006-brochure" /> without specifying a typeface.) In [[Unicode]], the cursive form is encoded as {{Unichar|2113|SCRIPT SMALL L}} from the "[[Letterlike Symbols (Unicode block)|letter-like symbols]]" block. Unicode encodes an explicit symbol as {{Unichar|1D4C1|MATHEMATICAL SCRIPT SMALL L}}.<ref>[https://www.unicode.org/versions/Unicode15.1.0/ch22.pdf The Unicode Standard, Version 15.0, Chapter 22]</ref> The [[TeX]] syntax <span style="font-family:monospace"><nowiki><math>\ell</math></nowiki></span> renders it as <math>\ell</math>. In mathematical formulas, an italic form (''{{char|ℓ}}'') of the script ℓ is the norm. Sometimes seen in [[Web typography]], a serif font for the lowercase letter ''ell'', such as {{char|{{Serif|l}}}}, in otherwise sans-serif text was used.
==Use in writing systems==
===Derived signs, symbols and abbreviations===
*ℒ ℓ𝓁 : Script[[Mathematical Alphanumeric Symbols|script letter]] L (capitaluppercase and lowercase, respectively), used in mathematics. (In other contexts, a [[script typeface]] (or [[computer font]]) should be used.)
*ℓ : mathematical symbol 'ell'; liter (traditional symbol)<ref>https://www.unicode.org/charts/PDF/U2100.pdf#page=3</ref>
*£ : [[pound sign]]
*Ꝉ ꝉ : Forms of L were used for medieval [[scribal abbreviation]]s<ref>{{Cite web|url=https://www.unicode.org/L2/L2006/06027-n3027-medieval.pdf|title=L2/06-027: Proposal to add Medievalist characters to the UCS|date=2006-01-30|first1=Michael|last1=Everson|first2=Peter|last2=Baker|first3=António|last3=Emiliano|first4=Florian|last4=Grammel|first5=Odd Einar|last5=Haugen|first6=Diana|last6=Luft|first7=Susana|last7=Pedro|first8=Gerd|last8=Schumacher|first9=Andreas|last9=Stötzner}}</ref>
==Other representations==
===Computing <span class="anchor" id="Computing codes"></span>===
The Latin letters {{angbr|L}} and {{angbr|l}} have [[Unicode]] encodings {{unichar|004C}} and {{unichar|006C}}. These are the same [[code point]]s as those used in [[ASCII]] and [[ISO 8859]]. There are also [[precomposed character]] encodings for {{angbr|L}} and {{angbr|l}} with diacritics, for most of those listed [[#Related characters|above]]; the remainder are produced using [[combining diacritic]]s.
{{charmap
| 004C | 006C | FF2C | FF4C | name1 = Latin Capital Letter L | name2 = Latin Small Letter L | name3 = FULLWIDTH LATIN CAPITAL LETTER L | name4 = FULLWIDTH LATIN SMALL LETTER L
Variant forms of the letter have unique code points for specialist use: the [[Mathematical Alphanumeric Symbols|alphanumeric symbols set]] in mathematics and science, and [[halfwidth and fullwidth forms]] for legacy [[CJK characters|CJK]] font compatibility.
| map1 = [[EBCDIC]] family | map1char1 = D3 | map1char2 = 93
| map2 = [[ASCII]]{{efn|Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings.}} | map2char1 = 4C | map2char2 = 6C
}}
===Other===
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