Unicode Character 'PLACE OF INTEREST SIGN' (U+2318)

Unicode Character 'PLACE OF INTEREST SIGN' (U+2318)

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Why this is used for the command key on Apple Macintoshes | Wikipedia entry

Unicode Data
Name PLACE OF INTEREST SIGN
Block Miscellaneous Technical
Category Symbol, Other [So]
Combine 0
BIDI Other Neutrals [ON]
Mirror N
Old name COMMAND KEY
Version Unicode 1.1.0 (June, 1993)
Encodings
HTML Entity (decimal) ⌘
HTML Entity (hex) ⌘
How to type in Microsoft Windows Alt +2318
UTF-8 (hex) 0xE2 0x8C 0x98 (e28c98)
UTF-8 (binary) 11100010:10001100:10011000
UTF-16 (hex) 0x2318 (2318)
UTF-16 (decimal) 8,984
UTF-32 (hex) 0x00002318 (2318)
UTF-32 (decimal) 8,984
C/C++/Java source code "\u2318"
Python source code u"\u2318"
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Java Data
string.toUpperCase()
string.toLowerCase()
Character.UnicodeBlock MISCELLANEOUS_TECHNICAL
Character.charCount() 1
Character.getDirectionality() DIRECTIONALITY_OTHER_NEUTRALS [13]
Character.getNumericValue() -1
Character.getType() 28
Character.isDefined() Yes
Character.isDigit() No
Character.isIdentifierIgnorable() No
Character.isISOControl() No
Character.isJavaIdentifierPart() No
Character.isJavaIdentifierStart() No
Character.isLetter() No
Character.isLetterOrDigit() No
Character.isLowerCase() No
Character.isMirrored() No
Character.isSpaceChar() No
Character.isSupplementaryCodePoint() No
Character.isTitleCase() No
Character.isUnicodeIdentifierPart() No
Character.isUnicodeIdentifierStart() No
Character.isUpperCase() No
Character.isValidCodePoint() Yes
Character.isWhitespace() No