Index: obj_pstk.h
===================================================================
--- obj_pstk.h	(revision 13068)
+++ obj_pstk.h	(revision 13069)
@@ -161,8 +161,8 @@
 void pcb_pstk_proto_del_shape(pcb_pstk_proto_t *proto, pcb_layer_type_t lyt, pcb_layer_combining_t comb);
 void pcb_pstk_proto_del_shape_idx(pcb_pstk_proto_t *proto, int idx);
 
-/* Mirror a padstack (useful for sending to the other side) */
-void pcb_pstk_mirror(pcb_pstk_t *ps, pcb_coord_t y_offs);
+/* Mirror a padstack (useful for sending to the other side - set swap_side to 1 in that case) */
+void pcb_pstk_mirror(pcb_pstk_t *ps, pcb_coord_t y_offs, int swap_side);
 
 /*** hash ***/
 unsigned int pcb_pstk_hash(const pcb_pstk_proto_t *p);