e70152e44cc66cc599ff6b699eb8adc07f3e656a
kent
  Sat May 24 21:09:34 2014 -0700
Adding Copyright NNNN Regents of the University of California to all files I believe with reasonable certainty were developed under UCSC employ or as part of Genome Browser copyright assignment.
diff --git src/utils/sets/sets.c src/utils/sets/sets.c
index 09bc88b..93a2843 100644
--- src/utils/sets/sets.c
+++ src/utils/sets/sets.c
@@ -1,16 +1,19 @@
 /* sets - Do set operations on one-word-per-line files.. */
+
+/* Copyright (C) 2007 The Regents of the University of California 
+ * See README in this or parent directory for licensing information. */
 #include "common.h"
 #include "linefile.h"
 #include "hash.h"
 #include "options.h"
 
 void usage()
 /* Explain usage and exit. */
 {
 errAbort(
   "sets - Do set operations on one-word-per-line files.\n"
   "usage:\n"
   "   sets command files\n"
   "where \"command\" is one of:\n"
   "   intersect - intersect all the files\n"
   "   union - union all the files\n"