<html lang="en">
<body>
<!--v errors:*--><!--/v-->
<!--b errormessage:*--><!--v errormessage/--><br><!--/b-->
<form name="credentials" action="" method="post">
  <input name="login" value="{{v param:login}}{{/v}}" type="text">
  <input name="password" type="password">
  <input type="submit" value="Login">
</form>
</body>
</html>