diff --git a/parser.go b/parser.go
index a3bc481..09c8d8a 100644
--- a/parser.go
+++ b/parser.go
@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"strings"
 )
-
+// one file
 type dna struct {
 	name  string
 	count int