Numbered musical notation and so on. Dashes after a note lengthen it, each dash by the length of a quarter note. A dot after the plain or underlined note works increases its length by half, and two dots by three quarters. The underline, along with its joining, are analogous to the number of flags and beaming in standard notation. So are dotted notes. But the analogue stops at notes worth three quarter notes and beyond, where dashes are used instead. The number "0" represents the musical rest. The rules for length is similar to that of the note, except that it is customary
Dot (diacritic) derivative as in formula_1. However, today this is more commonly written with a prime or using Leibniz's notation. In addition, the overdot is one way used to indicate an infinitely repeating set of numbers in decimal notation, as in formula_2, which is equal to the fraction ⅓, and formula_3 or formula_4, which is equal to ⅐. In Unicode, the dot is encoded at: and at: There is also: Pre-composed characters: Dot (diacritic) When used as a diacritic mark, the term dot is usually reserved for the "Interpunct" ( · ), or to the glyphs 'combining dot above' ( ◌̇ )