The bookmarks associated with this document.
PDF documents typically provide a list of bookmarks for easy
navigation between pages. In Acrobat, this navigation structure is
available under the Bookmarks tab. The PDF specification refers to
this structure as the document outline.
The document outline comprises of a hierarchy of bookmarks. The
bookmark at the top of the hierarchy is available via the Doc.Bookmark property.
Typically, a bookmark triggers navigation to a particular page, but
in some cases, it may trigger a different and more complex type of
Every bookmark holds a collection of all its child bookmarks. As
with all collections, you can use the Count property to determine
the number of items contained, and you can iterate through the
collection using the standard methods appropriate to the language
you are coding in.