static bool is_spaceable (Grob *g);
static SCM get_details (Grob *g);
static SCM get_spacing_spec (Grob *before, Grob *after, bool pure, int start, int end);
+ static Real get_fixed_spacing (Grob *before, Grob *after, int spaceable_index, bool pure, int start, int end);
protected:
void append_system (System*, Spring const&, Real padding);