Index: obj_subc.h
===================================================================
--- obj_subc.h	(revision 16986)
+++ obj_subc.h	(revision 16987)
@@ -125,6 +125,10 @@
 /* Returns whether there's no object in the subc */
 pcb_bool pcb_subc_is_empty(pcb_subc_t *subc);
 
+/* Update the subcircuit (e.g. bbox) after a part of the subcircuit has changed */
+void pcb_subc_part_changed_(pcb_any_obj_t *obj);
+#define pcb_subc_part_changed(obj) pcb_subc_part_changed_((pcb_any_obj_t *)obj)
+
 /*** subc creation helpers ***/
 
 /* Create the aux layer for a subc, set origin to ox;oy and rotation to rot */