Adding background image from a PDF file
The two commands that you can use are described in AFP2PDF Plus Transform Options File:
Append_PDF_Filespecifies the page origin as the bottom left-hand corner.
Append_PDF_File2specifies the page origin as the top left-hand corner.
You can specify various different options with this command, such as logo placement and scaling. Logo placement and scaling are controlled by specifying a set of linear transformation matrix values.
For more information on these values, see AFP2PDF Plus Transform Options File or the Adobe PDF Reference V1.7, Section 4.2.2,
Common Transformations, and Section 4.2.3