055623004394631452df0ee15fab1d00f0c3d57e
braney
  Thu Jul 1 10:50:41 2021 -0700
add some copyright and explanatory text at the top of cartRewrite.c

diff --git src/hg/lib/cartRewrite.c src/hg/lib/cartRewrite.c
index 16f0940..9992c93 100644
--- src/hg/lib/cartRewrite.c
+++ src/hg/lib/cartRewrite.c
@@ -1,15 +1,21 @@
+/* cartRewrite -- routines to enable cart rewrites. Carts and trackDbs
+ * have a version number and this code knows how to make the cart compatble
+ * with trackDb. */
+
+/* Copyright (C) 2021 The Regents of the University of California 
+ * See README in this or parent directory for licensing information. */
 
 #include "common.h"
 #include "cart.h"
 #include "hgConfig.h"
 
 static char *edit0Mm10tracks[] =
 {
 "snp142",
 "snp142Mult",
 "snp138",
 "snp138Common",
 "snp138Mult",
 "snp137Common",
 "snp137Mult",
 "snp137",