4 As a last resort, the placement of grobs can be adjusted manually, by
5 setting the @code{extra-offset} of a grob.
11 \outputproperty #(make-type-checker 'note-head-interface)
12 #'extra-offset = #'(2 . 3)
16 \outputproperty #(make-type-checker 'mark-interface)
17 #'extra-offset = #'(-1 . 4)