- \once \override Rest #'stencil = #ly:percent-repeat-item-interface::beat-slash
- \once \override Rest #'thickness = #0.48
- \once \override Rest #'slope = #1.7
+ \once \override Rest.stencil = #ly:percent-repeat-item-interface::beat-slash
+ \once \override Rest.thickness = #0.48
+ \once \override Rest.slope = #1.7