Index: trunk/src/rats_patch.h
===================================================================
--- trunk/src/rats_patch.h	(revision 38245)
+++ trunk/src/rats_patch.h	(revision 38246)
@@ -96,7 +96,11 @@
 /* Back annotate removal of all connections of a subc */
 void rats_patch_break_subc_conns(pcb_board_t *pcb, pcb_subc_t *subc, int undoable);
 
+/* Returns non-zero if subc is on the input netlist or on the net list patch
+   (scheduled for back annotation for creating the subc) */
+int rats_patch_is_subc_referenced(pcb_board_t *pcb, const char *refdes);
 
+
 /**** exporter ****/
 
 typedef enum pcb_ratspatch_fmt_e {