I need space for a long request for a small amount of dat

In Panorama 6, I want to present the user with a multi-line instruction for the entry of a data item which is itself quite small.

The CustomDialog statement offers me the opposite - a large data input area for a small instruction. Is there a method of achieving what I want?

The only approach I know is to make your own custom form for the layout and use rundialog to handle it when needed.