This International Standard specifies how to use the Portable Document Format (PDF) 1.4 for long-term preservation of electronic documents. It is applicable to documents containing combinations of character, raster, and vector data. This International Standard does not apply to: -Specific processes for converting paper or electronic documents to the PDF/A format -Specific technical design, user interface, implementation, or operational details of rendering -Specific physical methods of storing these documents such as media and storage conditions -Required computer hardware and/or operating systems.