Adobe 22020772 User Manual page 38

If you choose instead to set your own screen reader preferences, the following
guidelines can help you select options tailored to your specific needs.
Accessibility Setup Assistant, Screen 2 of 5
This screen is used to set preferences for text colors, text smoothing, and other options
not central to screen reader technology. Click Next to proceed to screen 3.
Accessibility Setup Assistant, Screen 3 of 5
Use the third screen to choose the reading order for documents that
are not tagged. The following options are supported:
• Infer Reading Order From Document (Recommended). When this option is selected, Adobe
Reader determines the reading order of untagged documents using an advanced method of layout
analysis. This option is recommended because it is most likely to provide the most accurate results.
It does, however, require more analysis and therefore may be slower than the other two options.
• Left-To-Right, Top-To-Bottom Reading Order. When this option is selected,
Adobe Reader interprets the reading order of untagged documents starting
from left to right on the page and moving from top to bottom.
• Use Reading Order In Raw Print Stream. When this option is selected, Adobe Reader
interprets the reading order of untagged documents based on the raw code in the
PDF document – essentially, the order text was recorded in the print stream.
When you choose either of the last two options, Adobe Reader does not include
form fields in the content, and it does not recognize tables.
Depending on the complexity of the PDF document, on-the-fly tagging may not adequately
capture the intended reading order of the document. Many PDF documents have multiple
columns or complex page designs that can affect how well Adobe Reader interprets the
content. If you are having trouble reading a particular PDF document, you can experiment
with the various Reading Order options to see if one works better than the others.
The next control on this screen is a check box labeled "Override the Reading Order in Tagged Documents. "
While the Reading Order options above apply to untagged documents by default, this option causes Adobe
Reader to use the reading order you selected (instead of using the reading order specified by the tag structure)
for tagged documents as well. This option is useful if you receive PDF documents that are poorly tagged.
The final control on this screen is a check box labeled "Confirm before Adding Tags to Document. " When
you select this option, Adobe Reader asks you to confirm its tagging options before it prepares an untagged
document for reading by your assistive technology. Tagging can be a time-consuming procedure, particularly
in larger documents, and this option alerts screen reader users when that procedure is about to begin.
Accessibility Setup Assistant, Screen 4 of 5
On the next screen, there is a set of three radio buttons used to select the delivery method of pages
for assistive technology. When Adobe Reader delivers information to a screen reader, it loads
Accessing PDF Documents with Assistive Technology
Adobe Reader Accessibility Features
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