…see NR A.7. Example: \layout { \context { \Voice \consists \color_interval_engraver #intervaldefs #`(("2--" ,UP #f ,…
…g natural), %% semitonic distance = 4 steps %% %% The engraver consists of two parts: %% %% color_interval_engraver: checks, whether … …fis fis eis fis r } >> \layout { \context { \Voice \consists \color_interval_engraver #intervaldefs ##t #`(("2-" ,DOWN … …fis fis eis fis r } >> \layout { \context { \Staff \consists \color_interval_engraver #intervaldefs #`(("4" ,UP #f ,…