AOCE aimed to fix all of these issues at the same time. At one end of the system, AOCE focuses on the underlying delivery and addressing systems, generalizing the email concept so the system can be used to deliver anything from email to word processor documents to print jobs. Addressing was another issue the market was struggling with, so AOCE offers a single universal addressing mechanism and address book, one that could support not only people's email addresses, but the addresses of things like printers and fax machines as well. These could be looked up in an interface much easier to use than the existing Macintosh solution, the Chooser.