Index: layersel/wt_layersel.c
===================================================================
--- layersel/wt_layersel.c	(revision 8558)
+++ layersel/wt_layersel.c	(revision 8559)
@@ -1,3 +1,4 @@
+#error PLEASE DO NOT EDIT - it's been copied to trunk/
 /*
  *                            COPYRIGHT
  *