static Interval width (Grob *);
static Interval relative_width (Grob *, Grob *);
static Grob *extremal_break_aligned_grob (Grob *, Direction, Interval *);
- static void set_distance (Drul_array<Item *>, Real);
+ static bool set_distance (Drul_array<Item *>, Real);
static void set_skyline_distance (Drul_array<Item*>, Real);
static void add_item (Grob *, Item *);
static void add_conditional_item (Grob *, Grob *);