Вобщем есть полосочка внизу строки эта вот Шифт+кнопка"-" _________________________ а как такуюже тока вверху? она нарисована на той же кнопке красненьким не зря ж
Code: In HTML using CSS, <span style="text-decoration: overline">text</span> In HTML documents, the characters can be produced with ¯ (decimal ¯) and ̅ (̅). In TeX, a single symbol can be overlined with \bar x or \bar{x}. Longer sections can be overlined with \overline{ABC}, where a space is written as "\ " and an umlaut is written as "\ddot a". In Microsoft Windows, the symbol can be added with any program with the keystrokes Alt+0175. In Linux, the symbol can be added using the keystrokes Ctrl+Shift+U to activate unicode input, then type "00AF" as the unicode for the character. wikipedia: overline
http://ascii-table.com/unicode-characters.php там всё. если не найдёш в таблице, пользуй там поиск. для ∜ например задай root.