PDF/A compliance is used primarily for creating
archival documents. You can create PDF/A-compliant files using either
the PDF/A-1b:2005 (CMYK) or PDF/A-1b:2005 (RGB) standard.
Note: For
PDF/A compliance, a document cannot contain encryption or scripts.
From the authoring application, choose File >
Print, and choose Adobe PDF as the printer.
Click Properties (Windows) or choose PDF Options from
the pop-up menu (Mac OS).
Choose the desired PDF/A option from the settings menu.