2 files changed, 4 insertions, 0 deletions
diff --git a/diff.awk b/diff.awk
index 41859db..1032659 100644
--- a/diff.awk
+++ b/diff.awk
@@ -1,3 +1,5 @@
+### diff.awk
+# numerical diff along columns
 
 BEGIN {
     sign = "[+-]?"
diff --git a/diff1.awk b/diff1.awk
index 41859db..1032659 100644
--- a/diff1.awk
+++ b/diff1.awk
@@ -1,3 +1,5 @@
+### diff.awk
+# numerical diff along columns
 
 BEGIN {
     sign = "[+-]?"