- \once \override TextScript #'fret-diagram-details
- #'top-fret-thickness = #5
- \once \override TextScript #'fret-diagram-details
- #'xo-font-magnification = #0.3
+ \once \override TextScript.fret-diagram-details.top-fret-thickness = #5
+ \once \override TextScript.fret-diagram-details.xo-font-magnification = #0.3