This bookmarks.adr file is used by Opera to store and sort bookmarks as you save them. Bookmark entries are stored with id, name, url, created, description, visited, short name and uniqueid tags.

An example bookmark.adr file would appear as follows:

Opera Hotlist version 2.0
Options: encoding = utf8, version=3

#FOLDER
ID=11
NAME=Trash
TRASH FOLDER=YES
UNIQUEID=4E1601F6F30511DB9CA51FD19A7AAECA

-

#URL
ID=12
NAME=Discover Opera
URL=http://redir.opera.com/speeddials/?id=1
CREATED=1240725198
UNIQUEID=A64359C0293911DE861FF750E858AD29

…/opera/

• …
• …
• bookmarks.adr
• …