Universal Character Set characters - Wikipedia
https://en.wikipedia.org/wiki/Universal_Character_Set_characters
Character Reference OverviewPlanesBlocksCategoriesSpecial-Purpose CharactersCharacters vs Code PointsWhitespace, Joiners, and SeparatorsTypes of Code PointCharacters, Grapheme Clusters and GlyphsCharacter Properties An HTML or XML numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format 1. &#nnnn; or 1. &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. The x must be lowercase in XML documents. The nnnn or hhhh may be any number of digits and may...
An HTML or XML numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format 1. &#nnnn; or 1. &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. The x must be lowercase in XML documents. The nnnn or hhhh may be any number of digits and may...
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