Extensible Markup Language

Documents

Each XML document has both a logical and a physical structure

• physical
  • entities
• logical
  • declarations
  • elements
  • comments
  • character references
  • processing instructions

Characters

Definition: A parsed entity contains text, a sequence of characters, which may represent markup or character data.

• entity
  • text
    • markup
      • character
    • data
      • character

Unicode

Entities

Applications

• RSS
• SVG

[1] document ::= prolog element Misc*
[2] Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
[3] S ::= (#x20 | #x9 | #xD | #xA)+
[4] NameStartChar ::= : | [A-Z] | _ | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
[4a] NameChar ::= NameStartChar | “-“ | “.” | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
[5] Name ::= NameStartChar (NameChar)*
[6] Names ::= Name (#x20 Name)*
[7] Nmtoken ::= (NameChar)+
[8] Nmtokens ::= Nmtoken (#x20 Nmtoken)*

Unicode

• [#xC0-#xD6] [#xD8-#xF6] [#xF8-#x0FF] - Latin-1 supplement characters
  • #xD7 - ×
  • #xF7 - ÷
• [#x0100 - #x2FF] - Latin Extended-A/B & IPA Extensions
• [#x0300 - #x033F] - CJK Symbols and Punctuation
• [#x370-#x37D] [#x37F-#x3FF] - Greek and Coptic
  • #x37E - ;
• [#x400 - #x1FFF] - Cyrillic … Arabic … Tibetan … Runic … Greek Extended
• [#x2000 - #206F] - General Punctuation
  • #x200C - “
  • #x200D - ”
• [#x2070 - #x218F] - Superscripts and Subscripts …Currency Symbols … Number Forms
• [#x2190 - #x2BFF]
  • Arrows
  • Mathematical Operators
  • …
  • Block Elements
  • [2B00 - 2BFF] - Miscellaneous Symbols and Arrows
• [#x2C00 - #x2FEF]
  • [#x2C00 - #x2E7F] - Unknown
  • [#x2E80 - #x2EFF] - CJK Radicals Supplement
  • [#x2F00 - #x2FDF] - Kangxi Radicals
  • [#x2FE0 - #x2FEF] - Unknown
  • [#x2FF0 - #x2FFF] - Ideographic Description Characters
• [#x3001 - #xD7FF]
  • [#x3000 - #x303F] - CJK Symbols and Punctuation
    • #x3000 - 　 - Ideographic Space
  • Hiragana
  • Katakana
  • Bopomofo
  • …
  • [4E00 — 9FFF] - CJK Unified Ideographs
  • [AC00 — D7AF] - Hangul Syllables
  • [D7B0 - D7FF] - Unknown
• [#xD800 - #xF8FF]
  • High Surrogates - leading bytes
  • High Private Use Surrogates
  • Low Surrogates - trailing bytes
  • [E000 — F8FF] - Private Use Area - will not be assigned characters by the Unicode Consortium
• [#xF900 - #xFDCF]|[#xFDF0-#xFFFD]
  • [F900 — FAFF] - CJK Compatibility Ideographs
  • [FB00 — FB4F] - Alphabetic Presentation Forms
  • [FB50 — FDFF] - Arabic Presentation Forms-A
    • [FDD0 - FDEF] - Undefined
  • …
  • [FFF0 — FFFF] - Specials
    • FFFD - � - Replacement Character

    • FFFE	FFFF - Undefined

• [#x10000-#xEFFFF]
  • [10000 — 1007F] - Linear B Syllabary
  • [10080 — 100FF] - Linear B Ideograms
  • [10100 — 1013F] - Aegean Numbers

https://jrgraphix.net/research/unicode_blocks.php

https://en.wikipedia.org/wiki/Unicode_block

https://www.fileformat.info/info/unicode/char/1F746/index.htm

Everson Mono
https://fontlibrary.org/en/font/symbola
https://unifoundry.com/unifont/
https://github.com/unicode-org/last-resort-font