ASCIIキャラクタの表と別名を表示するプログラマー用ユーティリティ
 Characters in the ASCII set can have many aliases, depending on context. A character's possible names include:
 * Its bit pattern (binary representation).
 * Its hex, decimal and octal representations.
 * Its teletype mnemonic and caret-notation form (for control chars).
 * Its backlash-escape form in C (for some control chars).
 * Its printed form (for printables).
 * Its full ISO official name in English.
 * Its ISO/ECMA code table reference.
 * Its name as an HTML/SGML entity.
 * Slang and other names in wide use for it among hackers.
 This utility accepts command-line strings and tries to interpret them as one of the above. When it finds a value, it
 prints all of the names of the character.