Private Use Characters
The UCS includes 137,468 code points for private use in three different ranges, each called a Private Use Area (PUA). The Unicode standard recognizes code points within PUAs as legitimate Unicode character codes, but does not assign them any (abstract) character. Instead, individuals, organizations and software vendors are free to use them as they see fit. Within closed systems, characters in the PUA can operate unambiguously, allowing such systems to represent characters or glyphs not defined in Unicode. In public systems their use is more problematic, since there is no registry and no way to prevent several organizations from adopting the same code points for different purposes. One example of such a conflict is Apple’s use of U+F8FF for the Apple logo, versus the ConScript Unicode Registry’s use of U+F8FF as klingon mummification glyph in the Klingon script.
The Basic Multilingual Plane includes a PUA in the range from U+E000 to U+F8FF (6,400 code locations). Plane Fifteen and Plane Sixteen have a PUAs that consist of all but their final two code locations, which are designated non-characters. The PUA in Plane Fifteen is the range from U+F0000 to U+FFFFD (65,534 code locations). The PUA in Plane Sixteen is the range from U+100000 to U+10FFFD (65,534 code locations).
PUAs are a concept inherited from certain Asian encoding systems. These systems had private use areas to encode what the Japanese call gaiji (rare characters not normally found in fonts) in application-specific ways.
Schemes and initiatives that use the PUA include:
Read more about this topic: Mapping Of Unicode Characters
Other articles related to "private use characters, characters, character, private":
... Apple lists a range of 1,280 characters in its developer documentation of U+F400–U+F8FF within the PUA for Apple’s use ... WGL4 uses the PUA (U+F001 and U+F002) to encode two characters which are duplicates of the ligatures ﬁ (U+FB01) ﬂ (U+FB02) ... For any character in this range, RichEdit would show a character from a symbol font instead of the end-user-defined character (EUDC) ...
... Beginning in the mid-1990s, as economic reforms allowed private investment in Russia, Akademgorodok saw the beginnings of venture funding ... By 1997 private investment reached $10 million by 2006 it was $150 million and climbing ... While still minuscule by the standards of other countries, the private venture effort in Akademgorodok has breathed new life into what was once one of the ...
... is an investigator, either a member of a police agency or a private person ... The latter may be known as private investigators or "private eyes" ...
... Several private schools in the town include The Bement School (a coeducational boarding school, grades K-9), the Eaglebrook School (a private boys ... There are other private schools in the Deerfield area ... The nearest private colleges, including members of the Five Colleges and Seven Sisters, are located southeast in the Northampton area ...
... Des Moines University N/A Des Moines 1898 Private 1,500 1929 ... Dropped athletics in 1929 Ellsworth College Panthers Iowa Falls 1890 Private ???? 1927 ... ICCAC (NJCAA) Iowa State Teachers College (now known ... University Fighting Bees Davenport 1882 Private/Roman Catholic 2,829 1954 ... MCC (NAIA) Upper Iowa University Peacocks Fayette 1857 Private 2003 ... Northern Sun (NSIC ...
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“We are like travellers using the cinders of a volcano to roast their eggs. Whilst we see that it always stands ready to clothe what we would say, we cannot avoid the question whether the characters are not significant of themselves.”
—Ralph Waldo Emerson (18031882)
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—Elizabeth I (15331603)