diff --git a/human.go b/human.go
index 3cc02d6..57bc47c 100644
--- a/human.go
+++ b/human.go
@@ -11,6 +11,7 @@ import (
 )
 
 // makes a human readable thing for standard out.
+// https://pkg.go.dev/fmt has good references for Sprintf
 func (r *RepoRow) StandardHeader() string {
 	lastTag := r.LastTag()
 	tag := r.Status.NewestTag()