Help for IPad and editing forum messages

Is there any way with the keyboard that is within the IPad to have a up/down arrow function? If I try to edit a long message after previewing it, I can no longer reach the end of the message, except by cutting and pasting back the entire message. I’m hoping there’s a better way. Thanks in advance.

Use a two finger swipe to scroll within a form field. This also works for any kid of nested scrollbars.