Adobe Acrobat 9 PRO Extended Manual de usuario descargar pdf (Pagina 279)

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Last updated 9/30/2011

Chapter 10: Accessibility, tags, and reflow

Accessibility features assist people with disabilities—such as mobility impairments, blindness, and low vision—in their

use of Adobe® Acrobat® 9 Pro Extended and Adobe PDFs.

Accessibility features

About accessibility features

A document or application is accessible if it can be used by people with disabilities—such as mobility impairments,

blindness, and low vision. Accessibility features in Adobe Acrobat, Adobe Reader®, and Adobe Portable Document

Format (PDF) enable people with disabilities to use PDF documents, with or without screen readers, screen

magnifiers, and braille printers.

Making PDFs accessible tends to benefit all users. For example, the document structure that enables a screen reader to

read a PDF out loud also enables a mobile device to reflow and display the document on a small screen. Similarly, the

preset tab order of an accessible PDF form helps all users—not just users with mobility impairments—fill the form

more easily.

Accessibility features in Acrobat and Reader fall into two broad categories: features to make the reading of PDF

documents more accessible and features to create accessible PDF documents. To create accessible PDF documents, use

Acrobat, not Reader.

Features for accessible reading of PDFs

• Preferences and commands to optimize output for assistive software and devices, such as saving as accessible text

for a braille printer

• Preferences and commands to make navigation of PDFs more accessible, such as automatic scrolling and opening

PDFs to the last page read

• Accessibility Setup Assistant for easy setting of most preferences related to accessibility

• Keyboard alternates to mouse actions

• Reflow capability to display PDF text in large type and to temporarily present a multicolumn PDF in a single, easy-

to-read column.

• Read Out Loud text-to-speech conversion

• Support for screen readers and screen magnifiers

Features for creating accessible PDFs

• Creation of tagged PDFs from authoring applications

• Conversion of untagged PDFs to tagged PDFs

• Security setting that allows screen readers to access text while preventing users from copying, printing, editing, and

extracting text

• Ability to add text to scanned pages to improve accessibility

• Tools for editing reading order and document structure

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Adobe Acrobat 9 PRO Extended Manual de usuario Pagina 279