Alterations in 12-EDO

The following table shows the alterations in the 12-tone equal-temperament system (12-EDO, traditional western tone system) with 2 degrees.

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<Degree<Alter.<Cents<Sfx De<Sfx En<std<sag<msag
000  
11/2100iss
−1−1/2−100esf
21200isisss x
−2−1−200esesff
std – Standard Notation
Standard sharp / flat symbols (U+E260 - U+E264).
sag – Sagittal Notation
2 × 2 Spartan Sagittal multi-shaft symbols after George D. Secor and David C. Keenan (U+E318 ... U+E335).
msag – Mixed Sagittal Notation
Standard sharp / flat symbols (U+E260 - U+E262, U+E264), and large double-sharp symbol (U+E47D). This is a variant of std and actually not a Sagittal notation.