Adobe ACROBAT READER 7.0 Manual page 249

Organizing Digital Editions
You can organize your Digital Editions into categories to make them easier to manage.
You can use the predefined categories or define your own. Digital Editions can be
assigned one or two categories. For example, a Digital Edition on resolving conflict might
be stored under "Business" and "Self-improvement."
Category menu in My Digital Editions
To add or edit categories:
1. Choose File > Digital Editions > My Digital Editions, and then choose Edit Categories
from the category menu at the top of the My Digital Editions bookshelf. You may need to
scroll down the menu.
2. In the Digital Editions Categories dialog box, do one of the following, and then click OK:
To add a new category, type its name in the text box and click Add.
To delete a category, select it, and click Delete.
To assign categories:
1. Choose File > Digital Editions > My Digital Editions.
2. Select a Digital Edition.
3. Do one of the following:
To assign the Digital Edition to one category, select a category from the Category 1 menu.
To assign the Digital Edition to a second category, select a category from the Category 2
menu.