The APES is a package that uses the concept of an ‘eEnvelope’ to attach files. The system may use any one of four provided eEnvelope templates, or can use a custom designed template. The AeB Pro package is required to attach documents to the eEnvelope. AeB Pro, and hence also eEnvelope, requires Acrobat Pro, version 7.0 or later, and requires the document author to create PDF using distiller.

The author is D. P. Story. The package is Copyright © 2006 D. P. Story.