Index: rats_patch.h
===================================================================
--- rats_patch.h	(revision 920)
+++ rats_patch.h	(revision 921)
@@ -2,4 +2,7 @@
 void rats_patch_append(PCBTypePtr pcb, rats_patch_op_t op, const char *id, const char *a1, const char *a2);
 
 /* Create [NETLIST_EDITED] from [NETLIST_INPUT] applying the patch */
-void rats_patch_apply(PCBTypePtr pcb);
+void rats_patch_make_edited(PCBTypePtr pcb);
+
+/* apply a single patch record on [NETLIST_EDITED]; returns non-zero on failure */
+int rats_patch_apply(PCBTypePtr pcb, rats_patch_line_t *patch);