Difference between revisions 23357 and 23403 on kowikibooks

{{:Unicode/Character reference}}

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Unicode and ISO/IEC 10646 do not assign actual characters to any of the code points in the D800–DFFF range — these code points only have meaning when used in surrogate pairs. Hence an individual code point from a surrogate pair does not represent a character, is invalid unless used in a surrogate pair, and is unconditionally invalid in UTF-32 and UTF-8 (if strict conformance to the standard is applied).