Adobe Acrobat 7 Professional - Manual (Page 562)

Adding searchable information to document properties
To make files easier to search, you can add information (called metadata) to your
document properties. Be sure to refer to the guidelines before entering metadata to any
Adobe PDF file but especially to files that you will index with the Catalog feature. (See
Guidelines for document properties information .)
To add document properties information:
1. Open an Adobe PDF file.
2. Choose File > Document Properties.
3. Select Description, type the information you want to include, and then click OK.
Repeat the procedure for each document in the collection that you will index. For more
detailed information on adding metadata, see
Editing document metadata .
(Windows) You can also enter and read the data properties information from the
desktop. Right-click the document in Windows Explorer, choose Properties, and click the
PDF tab. Any information you type or edit in this dialog box also appears in the
Document Properties Description when you open the file.