There are three new check formats in Pay Bills Print Checks form.
1.Bill Check Bottom
2.Bill Check Middle
3.Bill Check Top

Here is how each check formats will look like.
Bill Check Bottom

Bill Check Middle

Bill Check Top

Note: The Invoice Date will display the Bill Date of bill transaction. The Reference field will display the Description in bill transaction. In case of multiple line items in bill, the description of the top line item will be used.
Reference : Task 1734