Turned characters, those that have been rotated 180 degrees and thus appear upside-down (this is the most common).Inverted characters, those that have been reflected on a horizontal line (i.e., flipped vertically, only one letter has been done this way).Reversed characters, those that have been reflected in a vertical line, or flipped horizontally, like certain Cyrillic script letters.Each of these character names indicates what kind of transformation the characters have undergone: Unicode supports a variety of characters that resemble transformed characters, primarily for various forms of phonetic transcription. The most common of these transformations are rotation and reflection. In the meantime, several ways of producing the visual effects of text transformations have come into use. In the case of HTML, this limitation in display may eventually be addressed through standard cascading style sheets (CSS), since proposed specifications for CSS3 include rotation for block elements. Many systems, such as HTML, seven-segment displays and plain text, do not support transformation of text.
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