Sap Script Vendor Check : Printing Main window information twice

Hi,

I am using ZRFFOUS_C and ZF110_PRENUM_CH copied from standard driver program and form.

The Main window prints all the invoice line items.

I need to print the same data in another window on all pages of vendor check.

This new window should behave exactly like MAIN WINDOW on all pages of check. If anyone has done this approach, greatly appreciate your feedback.