source file of the LilyPond music typesetter
- (c) 1996--2007 Han-Wen Nienhuys
+ (c) 1996--2008 Han-Wen Nienhuys
*/
#ifndef GROB_HH
/* offset/extent callbacks. */
void add_offset_callback (Grob *g, SCM proc, Axis a);
void chain_offset_callback (Grob *g, SCM proc, Axis a);
+void chain_callback (Grob *g, SCM proc, SCM sym);
SCM axis_offset_symbol (Axis a);
SCM axis_parent_positioning (Axis a);