(ly:input-location music-origin)
#f)))
+;; todo: how to integrate nicely?
+;(define-public (tweak-grob-property grob sym val)
+; (set! (ly:grob-property grob sym) val))
+
(define-method (tweak (go <gnome-outputter>) item offset)
(let* ((grob (hashq-ref (item-grobs go) item #f))