private:
static void add_streepjes (Grob *me, int pos, int interspaces, Stencil *custos_);
static Stencil create_ledger_line (Interval x_extent, Grob *me);
private:
static void add_streepjes (Grob *me, int pos, int interspaces, Stencil *custos_);
static Stencil create_ledger_line (Interval x_extent, Grob *me);