Adobe 22002420 - Acrobat Standard - PC, Руководство пользователя, Страница: 240 / 404

234 ADOBE ACROBAT 8 STANDARD
User Guide
Note:
The accessibility checker tools can help to identify areas of documents that may be in conflict with the Adobe inter­
pretation of the accessibility guidelines referenced in the application and its documentation. However, these tools don’t
check documents against all accessibility criteria, including those in such referenced guidelines, and Adobe doesn’t
warrant that documents comply with any specific guidelines or regulations.
See also
“Reading a PDF with a screen reader” on page 240
“Reflow a PDF” on page 239
“Read a PDF with Read Out Loud” on page 240
“Save as accessible text for a braille printer” on page 239
Check accessibility with Quick Check
Use Quick Check to examine a PDF to see if it has searchable text, document structure tags, and appropriate security
settings to make it accessible.
❖
Press Shift+Ctrl+6/Shift+6.
If the document is unstructured, a message may appear, suggesting that you change reading order preferences.
See also
“Setting accessibility preferences” on page 235
Accessibility Quick Check results
“This document has logical structure but it is not a Tagged PDF. Some accessibility information may be missing.”
Quick Check has found an underlying document structure in the document, so Acrobat will use the available
document structure to control the reading order, rather than analyzing the document itself. However, this untagged
document structure might be incomplete or unreliable, so assistive software and the accessibility features in Acrobat
(such as the Read Out Loud and the Save As Text features) may not read the page properly. If the reading order of
the page seems to be wrong, select Override The Reading Order In Tagged Documents in the Reading panel of the
Preferences dialog box.
“This document is not structured, so the reading order may not be correct. Try different reading orders using the
Reading Preferences panel.”
Quick Check has found no underlying document structure that Acrobat can use for
reading order. Acrobat will analyze the reading order of the document using the current analysis method set in the
Reading Order preference, but this PDF might not be read correctly by screen readers. If the reading order seems
wrong, select a different option for Reading Order in the Reading panel of the Preferences dialog box.
“No accessibility problems were detected in this quick check. Choose the Full Check command to check more
thoroughly.”
Quick Check has found that the PDF contains searchable text, is tagged, has an underlying document
structure, and has no security settings that prohibit access for screen readers. To check for other types of accessibility
problems that may be present in the PDF, use Full Check.
“This document’s security settings prevent access by screen readers.”
Quick Check has found that the PDF has
security settings that interfere with screen readers’ ability to extract text for conversion to speech. You may be able
to use a screen reader with this document if your assistive technology product is registered with Adobe as a Trusted
Agent. Contact your assistive technology product vendor.
“This document appears to contain no text. It may be a scanned image.”
Quick Check has found that the PDF
contains no searchable text, probably because the document consists entirely of one or more scanned images. This