+ (meta . ((interfaces . (multi-measure-rest-interface font-interface percent-repeat-interface))))
+ ))
+
+ (PianoPedalBracket ;; an example of a text spanner
+ . (
+ (molecule-callback . ,Text_spanner::brew_molecule)
+ (font-family . roman)
+ (type . line)
+ (if-text-padding . 1.0)
+ (width-correct . 0)
+ (outer . #t)
+ (direction . -1)
+ (edge-width . (0.5 . 0.5))
+ (edge-height . (1.0 . 1.0))
+ (shorten-pair . (0.0 . 0.0))
+ (thickness . 1.0)
+ (meta . ((interfaces . (piano-pedal-interface))))