Mapping XML Named Character References to Unicode Characters

Characters & Code Points

Character sets provide mappings between numeric code points and the semantics of characters at each code point.

Mapping named entity references to characters

Markup languages (e.g. DocBook, TEI, MathML, (X)HTML) define mappings between named character entity references (e.g. π) and Unicode code points.

Named character reference Numeric character reference (hex) Numeric character reference (dec) Unicode character

Entity sets

The W3C's "Entity Definitions for Characters" specification is in Last Call Working Draft status, and the deadline for reviews was last week. Hopefully it will become an official recommendation soon.