Editing Unicode (section)

=== Standardized subsets ===
Several subsets of Unicode are standardized: Microsoft Windows since [[Windows NT 4.0]] supports [[WGL-4]] with 657 characters, which is considered to support all contemporary European languages using the Latin, Greek, or Cyrillic script. Other standardized subsets of Unicode include the Multilingual European Subsets:<ref>[https://www.evertype.com/standards/iso10646/pdf/cwa13873.pdf CWA 13873:2000&nbsp;– Multilingual European Subsets in ISO/IEC 10646-1] [[European Committee for Standardization|CEN]] Workshop Agreement 13873</ref> MES-1 (Latin scripts only; 335 characters), MES-2 (Latin, Greek, and Cyrillic; 1062 characters)<ref>{{Cite web |last = Kuhn |first = Markus |author-link = Markus Kuhn (computer scientist) |date = 1998 |title=Multilingual European Character Set 2 (MES-2) Rationale |url=https://www.cl.cam.ac.uk/~mgk25/ucs/mes-2-rationale.html |access-date=20 March 2023 |publisher=University of Cambridge}}</ref> and MES-3A & MES-3B (two larger subsets, not shown here). MES-2 includes every character in MES-1 and WGL-4.

The standard [[DIN 91379]]<ref>{{Cite web |title=DIN 91379:2022-08: Characters and defined character sequences in Unicode for the electronic processing of names and data exchange in Europe, with CD-ROM |url=https://www.beuth.de/en/standard/din-91379/353496133 |access-date=21 August 2022 |publisher=Beuth Verlag}}</ref> specifies a subset of Unicode letters, special characters, and sequences of letters and diacritic signs to allow the correct representation of names and to simplify data exchange in Europe. This standard supports all of the official languages of all European Union countries, as well as the German minority languages and the official languages of Iceland, Liechtenstein, Norway, and Switzerland. To allow the transliteration of names in other writing systems to the Latin script according to the relevant ISO standards, all necessary combinations of base letters and diacritic signs are provided.

{| class="wikitable"
|+ {{nobold|'''WGL-4''', ''MES-1'' and MES-2}}
|-
! Row !! Cells !! Range(s)
|-
!rowspan="2"| 00
| '''''20–7E'''''
| [[Basic Latin (Unicode block)|Basic Latin]] (00–7F)
|-
| '''''A0–FF'''''
| [[Latin-1 Supplement (Unicode block)|Latin-1 Supplement]] (80–FF)
|-
!rowspan="2"| 01
| '''''00–13,'' 14–15, ''16–2B,'' 2C–2D, ''2E–4D,'' 4E–4F, ''50–7E,'' 7F'''
| [[Latin Extended-A]] (00–7F)
|-
| 8F, '''92,''' B7, DE-EF, '''FA–FF'''
| [[Latin Extended-B]] (80–FF <span title="U+024F">...</span>)
|-
!rowspan="3"| 02
| 18–1B, 1E–1F
| Latin Extended-B (<span title="U+00180">...</span> 00–4F)
|-
| 59, 7C, 92
| [[IPA Extensions]] (50–AF)
|-
| BB–BD, '''C6, ''C7,'' C9,''' D6, '''''D8–DB,'' DC, ''DD,''''' DF, EE
| [[Spacing Modifier Letters]] (B0–FF)
|-
! 03
| 74–75, 7A, 7E, '''84–8A, 8C, 8E–A1, A3–CE,''' D7, DA–E1
| [[Greek and Coptic|Greek]] (70–FF)
|-
! 04
| '''00–5F, 90–91,''' 92–C4, C7–C8, CB–CC, D0–EB, EE–F5, F8–F9
| [[Cyrillic (Unicode block)|Cyrillic]] (00–FF)
|-
! 1E
| 02–03, 0A–0B, 1E–1F, 40–41, 56–57, 60–61, 6A–6B, '''80–85,''' 9B, '''F2–F3'''
| [[Latin Extended Additional]] (00–FF)
|-
! 1F
| 00–15, 18–1D, 20–45, 48–4D, 50–57, 59, 5B, 5D, 5F–7D, 80–B4, B6–C4, C6–D3, D6–DB, DD–EF, F2–F4, F6–FE
| [[Greek Extended]] (00–FF)
|-
!rowspan="3"| 20
| '''13–14, ''15,'' 17, ''18–19,'' 1A–1B, ''1C–1D,'' 1E, 20–22, 26, 30, 32–33, 39–3A, 3C, 3E, 44,''' 4A
| [[General Punctuation]] (00–6F)
|-
| '''7F''', 82
| [[Superscripts and Subscripts]] (70–9F)
|-
| '''A3–A4, A7, ''AC,''''' AF
| [[Currency Symbols (Unicode block)|Currency Symbols]] (A0–CF)
|-
!rowspan="3"| 21
| '''05, 13, 16, ''22, 26,'' 2E'''
| [[Letterlike Symbols]] (00–4F)
|-
| '''''5B–5E'''''
| [[Number Forms]] (50–8F)
|-
| '''''90–93,'' 94–95, A8'''
| [[Arrows (Unicode block)|Arrows]] (90–FF)
|-
! 22
| 00, '''02,''' 03, '''06,''' 08–09, '''0F, 11–12, 15, 19–1A, 1E–1F,''' 27–28, '''29,''' 2A, '''2B, 48,''' 59, '''60–61, 64–65,''' 82–83, 95, 97
| [[Mathematical Operators]] (00–FF)
|-
! 23
| '''02, 0A, 20–21,''' 29–2A
| [[Miscellaneous Technical]] (00–FF)
|-
!rowspan="3"| 25
| '''00, 02, 0C, 10, 14, 18, 1C, 24, 2C, 34, 3C, 50–6C'''
| [[Box Drawing]] (00–7F)
|-
| '''80, 84, 88, 8C, 90–93'''
| [[Block Elements]] (80–9F)
|-
| '''A0–A1, AA–AC, B2, BA, BC, C4, CA–CB, CF, D8–D9, E6'''
| [[Geometric Shapes (Unicode block)|Geometric Shapes]] (A0–FF)
|-
! 26
| '''3A–3C, 40, 42, 60, 63, 65–66, ''6A,'' 6B'''
| [[Miscellaneous Symbols]] (00–FF)
|-
! F0
| (01–02)<!--in WGL-4, but not in MES-2-->
| [[Private Use Area (Unicode block)|Private Use Area]] (00–FF ...)
|-
! FB
| '''01–02'''
| [[Alphabetic Presentation Forms]] (00–4F)
|-
! FF
| FD
| [[Specials (Unicode block)|Specials]]
|}

Rendering software that cannot process a Unicode character appropriately often displays it as an open rectangle, or as {{tt|U+FFFD}} to indicate the position of the unrecognized character. Some systems have made attempts to provide more information about such characters. Apple's [[Last Resort font]] will display a substitute glyph indicating the Unicode range of the character, and the [[SIL International]]'s [[Unicode fallback font]] will display a box showing the hexadecimal scalar value of the character.