An AP page is similar to a .PHP or .ASP page, but uses a generic extension since it can contain multiple types of code. AP files are recognized by the Open5g platform.
Layout document created by Esko ArtPro, a prepress print editor; contains an ArtPro project, which includes the layout, layers, text, colors, and barcodes of your design.
ArtPro is designed to increase the efficiency of packaging preproduction departments. It allows you to create the exact layout of your design using images from industry standard applications, such as Illustrator and Photoshop. ArtPro uses the AP file to save the edits you have made to your document, check for errors, and see a 3D view of your print.