1 files changed, 4 insertions, 0 deletions
diff --git a/sum b/sum
index d6749a1..9469302 100755
--- a/sum
+++ b/sum
@@ -2,6 +2,10 @@
 
 # checksum -- create checksum for local patch
 
+#
+# Note that checksums are optional for local patches.
+#
+
 [ -z "$1" ] && { echo usage: $0 patch 1>&2; exit 1; }
 
 localpath=`readlink -f "$1"`