Index: data.h
===================================================================
--- data.h	(revision 14915)
+++ data.h	(revision 14916)
@@ -202,5 +202,7 @@
    pcb_data_clip_inhibit_dec(). */
 void pcb_data_clip_dirty(pcb_data_t *data, pcb_bool enable_progbar);
 
+/* Recursively change flags of data; how is one of pcb_change_flag_t */
+void pcb_data_flag_change(pcb_data_t *data, pcb_obj_type_t mask, int how, unsigned long flags);
 
 #endif