static Interval head_positions (Grob *);
static Real stem_end_position (Grob *);
static Stencil flag (Grob *);
static Stencil get_translated_flag (Grob*);
static Interval head_positions (Grob *);
static Real stem_end_position (Grob *);
static Stencil flag (Grob *);
static Stencil get_translated_flag (Grob*);