Adobe ACROBAT READER 7.0 Manual page 171

About accessibility preferences
Adobe Reader provides several settings that make PDF files more accessible for visually-
impaired and motion-impaired users. These settings change how PDF documents appear
on-screen and are read by a screen reader. They also allow users to navigate documents
using only keyboard shortcuts. The Accessibility Setup Assistant provides on-screen
instructions for setting preferences in Adobe Reader.
You can select all of these settings in the Preferences dialog box, as well as preferences
that aren't available by using the wizard. Specifically, you can set your Multimedia
preferences to hear available descriptions for video and audio attachments, and your
Reading preferences to read form fields out loud. For a list of keyboard shortcuts for
Adobe Reader, see About keyboard shortcuts. For more information about how users with
disabilities access PDF documents, visit the Adobe website at http://access.adobe.com.