The standard staff has three solid lines representing C, E, and G#/Ab. When the staff is extended beyond one octave the C line is made bold to help differentiate the lines. Schoenberg also mentioned the possibility of experimenting with substituting dotted or dashed lines in various configurations, but concluded “I do not really believe this will be necessary.” (Schoenberg, A. “A New Twelve Tone Notation,” Style and Idea, p.530, footnote 2). The three elevations of notes between the lines are emphasized with short slash marks that pass either below, above, or through the noteheads. Otherwise traditional notes, stems, and rhythmic notation are used.

Earliest documentation: 1924

Source: Directory of Music Notation Proposals, section/page: 13/86

Similar Notations: DA Notation by Rich Reed