…ly:make-stencil `(delay-stencil-evaluation ,(delay whiteout-expr))) stil))))) #(define-markup-command (outliner layout props thickness color arg) (number? color? markup?) #:category … …1)) (stencil-whiteout-box-outline (interpret-markup layout props arg) (* thickness (ly:output-def-lookup layout 'line-thickness)) color angle-increments radial-increments)) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% A new G clef … …d e f g a b c) \bar "|." } \layout { indent = 0 \context { \Staff %%% Apply a new G …