Tagged PDF documents
The intent of this technique is to make it possible for users to locate content using bookmarks (outline entries in an Outline dictionary) in long documents.
A person with cognitive disabilities may prefer a hierarchical outline that provides an overview of the document rather than reading and traversing through many pages. This is also a conventional means of navigating a document that benefits all users.
This example is shown with Microsoft Word and Adobe Acrobat Pro. There are other software tools that perform similar functions.
The table-of-contents entries in the converted document will be linked to the headings in the document. In addition, the headings will appear as PDF Bookmarks in the Acrobat navigation pane.
If the document provides a glossary and/or index, these sections should have headings that appear in the table of contents (and thus as bookmarks in the Navigation pane). The table of contents also should be marked up with a heading so it is bookmarked as well.
If this markup has not been done in the authoring tool, Adobe Acrobat Pro can be used to provide the tags. See PDF9 if you need to modify converted headings or add new ones.
This example is shown in operation in the working example of creating bookmarks with Word.
This example is shown with OpenOffice Writer and Adobe Acrobat Pro and Reader. There are other software tools that perform similar functions.
Using the Styles and Formatting dialog found in the Format option, or by press F11, select the text to appear in the table of contents and then select a Heading.
To create a table of contents at the beginning of the OpenOffice.org Writer document:
The table-of-contents entries in the converted document will be linked to the headings in the document, and will appear as PDF Bookmarks in the left-hand Navigation pane. The OpenOffice.org Table of Contents and Bookmarks look the same as they appeared in Example 1.
This example is shown in operation in the working example of creating bookmarks with OpenOffice Writer.
This example is shown with Adobe Acrobat Pro. There are other software tools that perform similar functions.
After conversion to tagged PDF, you may decide to add bookmarks that were not automatically generated. Like the converted bookmarks, tagged bookmarks use the underlying structural information in the document.
This example is shown in operation in the working example of creating bookmarks with Acrobat Pro.
The following code fragment illustrates part of an outline hierarchy used to create bookmarks This is typically accomplished by an authoring tool.
121 0 obj
<< /Type /Outlines
/First 22 0 R
/Last 29 0 R
/Count 6
>>
endobj
22 0 obj
<< /Title (Applying Guerrilla Tactics to Usability Testing by People with Disabilities)
/Parent 21 0 R
/Next 29 0 R
/First 25 0 R
/Last 28 0 R
/Count 4
/Dest [3 0 R /XYZ 0 792 0]
>>
endobj
25 0 obj
<< /Title (Getting started)
/Parent 22 0 R
/Next 26 0 R
/Dest [3 0 R /XYZ null 701 null]
>>
endobj