Custom Field "Message" title also exports to xls sheet.
Not sure if this is intentional but is probably not needed.
If it is, maybe add a "Tip" Custom Field.
Currently I use the message custom field as a conditional to display descriptions for a selected custom field to help with the registration process.
It would also be nice if the Message field was able to use the normal editor so that styling can be applied. Seems to strip out html.