Circumflex in Digital Character Sets
The precomposed characters Â/â, Ê/ê, Î/î, Ô/ô, and Û/û (which incorporate the circumflex) are included in the ISO-8859-1 character set, and dozens more are available in Unicode. In addition, Unicode has U+0302 ◌̂ combining circumflex accent, which in principle allows adding the diacritic to any base letter.
For historical reasons, there is a similar but larger character, U+005E ^ circumflex accent, which is also included in ASCII but often referred to as caret instead. It is, however, unsuitable for use as a diacritic on modern computer systems, as it is a spacing character. Another spacing circumflex character in Unicode is the smaller U+02C6 ˆ modifier letter circumflex, mainly used in phonetic notations – or as a sample of the diacritic in isolation.
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