In the notations after Franz Richter Herf and Rolf Maedel, after Ezra Sims, as well as after Horst-Peter Hesse, the sharp / flat symbols are completed by three additional signs and their inversions for the degrees within the semitone.

Richter Herf / Maedel
Sims
Hesse
Alteration, Tone fraction		+1/12	+1/6	+1/4	-1/4	-1/6	-1/12
Distance	0	162⁄3	331⁄3	50		662⁄3	831⁄3	100
Reach of hearing	912⁄3	81⁄3	25	412⁄3	581⁄3	75	912⁄3	1081⁄3

Distance and reach of hearing in cents tempered.

In case of Richter Herf / Maedel, the arrows are placed above the notes and they apply to the respective measure, just like the conventional accidentals. A diagonal slash cancels them. However, together with chords, bent arrows are used for better legibility; for example:

See also

• Lookup tables of accidentals
• Chronota by Lukas Brandt