Adobe 22002420 - Acrobat Standard - PC, Руководство пользователя, Страница: 252 / 404

246 ADOBE ACROBAT 8 STANDARD
User Guide
If your assistive technology product is registered with Adobe as a Trusted Agent, you can read PDFs that might be
inaccessible to another assistive technology product. Acrobat recognizes when a screen reader or other product is a
Trusted Agent and overrides security settings that would typically limit access to the content for accessibility
purposes. However, the security settings remain in effect for all other purposes, such as to prevent printing, copying,
extracting, commenting, or editing text.
About watermarks and screen readers
You can add a watermark to a tagged PDF without also adding it to the tag tree. Not having the watermark appear in
the tag tree is helpful for people who are using screen readers, because they won’t hear the watermark read as
document content.
The best way to add a watermark that doesn’t interfere with screen readers is to insert an untagged PDF of the
watermark into a tagged PDF.
See also
“Add and edit watermarks” on page 123