SECTION 8.2
587
Document-Level Navigation
order). Table 8.5 shows the meanings of the flags; all undefined flag bits are
reserved and must be set to 0.
TABLE 8.5 Outline item flags
BIT POSITION
NAME
MEANING
1
2
Italic
Bold
If set, display the item in italic.
If set, display the item in bold.
Example 8.1
21 0 obj
<< /Count 6
/First 22 0 R
/Last 29 0 R
>>
endobj
22 0 obj
<< /Title ( Chapter 1 )
/Parent 21 0 R
/Next 26 0 R
/First 23 0 R
/Last 25 0 R
/Count 3
/Dest [ 3 0 R /XYZ 0 792 0 ]
>>
endobj
8.2.3 Thumbnail Images
A PDF document can define
thumbnail images
representing the contents of its
pages in miniature form. A viewer application can display these images on the
screen, allowing the user to navigate to a page by clicking its thumbnail image:
Note:
Thumbnail images are not required, and may be included for some pages and
not for others.