Using Bookmarks
You can enter a bookmark in any location in text.
Note: Bookmarks are assigned to particular pages, so if the font size changes, the bookmark will exist at the same page number in the new font size, not necessarily the same location in text.
To add a bookmark, follow these steps.
1.From any location in text, tap the page number, then tap Add book- mark.
Add Bookmark dialog box
You see the Add Bookmark dialog box.
2.Enter a short label describing the bookmark.
3.Tap Add to add the bookmark.
Bookmark marker
Bookmark notch 
appears at the top right corner of the page where the bookmark was added.
A small notch is placed on the progress bar indicating the location of
the bookmark in a document. 
and 
appear to the left and right
of the bar when a document has bookmarks. Tap 
and 
to move to the previous or next bookmark position.
4.Tap 
to display the bookmark label.
Bookmark label
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