Notation
The Maneri-Sims notation system designed for 72-et uses the accidentals and for 1/12th down and up (16.6 cents), and for 1/6th down and up (33.3 cents), and and for 1/4 up and down (50 cents).
They may be combined with the traditional sharp and flat symbols by being placed before them, for example: ♭ or ♭, but without the intervening space.
Read more about this topic: 72 Equal Temperament