Unicode private use areas

stay Unicode in , Private use area ( PUA ) Is a series of Code points , According to the definition , Unicode union No characters will be assigned to it .[1] Three private use areas are defined ： A is located in the Basic Multilingual plane ( U+E000–U+F8FF ), One is located and almost covers Plane 15 and 16 ( U+F0000–U+FFFFD , U+ 100000–U+10FFFD）. Code points in these areas cannot be considered Unicode Its own standardized characters . They are deliberately undefined , So that third parties can define their own characters , Not with Unicode Alliance allocation conflict . according to Unicode Stability policy ,[2] In all future Unicode In the version , Private use areas will still be allocated for this purpose .

Definition

according to Unicode Definition , Code points in private use areas are assigned characters —— They are not non characters 、 Reserved or unallocated . Their Category yes “ Other, private use (Co)”, And no character name is specified . There is no representative font , And the character semantics are left to private agreements .