Modifier Tone Letters
The Unicode block Modifying audio tone (English Modifier Tone Letters, U A700 to U A71F ) includes modifying characters that identify the pitch or the Tonverlauf in so-called tone languages . More tone marks - for example, MODIFIER LETTER EXTRA -HIGH TONE BAR (IPA 519) - are located in the Unicode Spacing Modifier Letters block.
Table
All characters have the bidirectional class " Other neutral characters ."