Index: rats_patch.h
===================================================================
--- rats_patch.h	(revision 935)
+++ rats_patch.h	(revision 936)
@@ -49,3 +49,7 @@
 
 /* find the net entry for a pin (slow) */
 LibraryMenuTypePtr rats_patch_find_net4pin(PCBTypePtr pcb, const char *pin);
+
+/* save all patch lines as an ordered list of text lines
+   if fmt is non-zero, generate pcb savefile compatible lines, else generate a back annotation patch */
+int rats_patch_fexport(PCBTypePtr pcb, FILE *f, int fmt_pcb);