Editing Byte order mark (section)

==Byte-order marks by encoding==
This table illustrates how the BOM is represented as a byte sequence in various encodings and how those sequences might appear in a text editor that is [[mojibake|interpreting each byte as a legacy encoding]] ([[Windows-1252]] and [[caret notation]] for the [[C0 and C1 control codes|C0 controls]]):

{| class="wikitable"
|-
! Encoding
! Representation ([[hexadecimal]])
! Representation ([[decimal]])
! Bytes interpreted as Windows-1252
|-
| [[UTF-8]]{{refn|This is not literally a "byte order" mark, since a code unit in these encodings is one byte and therefore cannot have bytes in a "wrong" order. Nevertheless, the BOM can be used to indicate the encoding of the text that follows it.<ref name="utf-8-bom"/><ref>{{cite journal|url=http://tools.ietf.org/html/rfc3629#section-6 |title=RFC 3629 - UTF-8, a transformation format of ISO 10646 |newspaper=Ietf Datatracker |date=8 November 2003 |access-date=28 January 2017|last1=Yergeau |first1=François }}</ref>|group=lower-alpha|name=b}}
| {{tt|EF BB BF}}
| {{tt|239 187 191}}
| {{tt|ï»¿}}
|-
| [[UTF-16]] ([[Big Endian|BE]])
| {{tt|FE FF}}
| {{tt|254 255}}
| {{tt|þÿ}}
|-
| [[UTF-16]] ([[Little Endian|LE]])
| {{tt|FF FE}}
| {{tt|255 254}}
| {{tt|ÿþ}}
|-
| [[UTF-32]] (BE)
| {{tt|00 00 FE FF}}
| {{tt|0   0   254 255}}
| {{tt|^@^@þÿ}} ({{tt|^@}} is the [[null character]])
|-
| [[UTF-32]] (LE)
| {{tt|FF FE 00 00}}
| {{tt|255 254 0 0}}
| {{tt|ÿþ^@^@}} ({{tt|^@}} is the null character)
|-
| [[UTF-7]]<ref name=b group=lower-alpha/>
| {{tt|2B 2F 76}}<ref group=lower-alpha>Followed by {{code|38}}, {{code|39}}, {{code|2B}}, or {{code|2F}} (ASCII {{code|8}}, {{code|9}}, {{code|+}} or {{code|/}}), depending on what the next character is.</ref><ref>{{Cite web |last=Honermann |first=Tom |date=January 2, 2021 |title=Clarify guidance for use of a BOM as a UTF-8 encoding signature |url=https://unicode.org/L2/L2021/21038-bom-guidance.pdf |website=Unicode}}</ref><ref>{{Cite web|url=https://docs.sdl.com/791187/581899/sdl-contenta-5-7/representations-of-boms-by-encoding|title=SDL Documentation}}</ref>
| {{tt|43 47 118}}
| {{tt|+/v}}
|-
| [[UTF-1]]<ref name=b group=lower-alpha/>
| {{tt|F7 64 4C}}
| {{tt|247 100 76}}
| {{tt|÷dL}}
|-
| [[UTF-EBCDIC]]<ref name=b group=lower-alpha/>
| {{tt|DD 73 66 73}}
| {{tt|221 115 102 115}}
| {{tt|Ýsfs}}
|-
| [[Standard Compression Scheme for Unicode|SCSU]]<ref name=b group=lower-alpha/>
| {{tt|0E FE FF}}{{refn|SCSU allows other encodings of U+FEFF, the shown form is the signature recommended in UTR #6.<ref>{{cite web|author=Markus Scherer |url=https://www.unicode.org/reports/tr6/#Signature |title=UTS #6: Compression Scheme for Unicode |website=Unicode.org |access-date=28 January 2017}}</ref>|group=lower-alpha}}
| {{tt|14 254 255}}
| {{tt|^Nþÿ}} ({{tt|^N}} is the [[Shift Out and Shift In characters|"shift out" character]])
|-
| [[Binary Ordered Compression for Unicode|BOCU-1]]<ref name=b group=lower-alpha/>
| {{tt|FB EE 28}}
| {{tt|251 238 40}}
| {{tt|ûî(}}
|-
| [[GB 18030|GB18030]]<ref name=b group=lower-alpha/>
| {{tt|84 31 95 33}}
| {{tt|132 49 149 51}}
| {{tt|„1•3}}
|}
{{Reflist|group=lower-alpha}}