1 files changed, 3 insertions, 0 deletions
diff --git a/duitku.go b/duitku.go
index 439e84e..f95d28e 100644
--- a/duitku.go
+++ b/duitku.go
@@ -3,6 +3,9 @@
 
 // Package duitku provide library and HTTP client for [duitku.com].
 //
+// In the types, field that tagged with [REQ] is required and [OPT] is
+// optional.
+//
 // [duitku.com]: https://docs.duitku.com/disbursement/id/#langkah-awal
 package duitku