Adding keyword tags to images
Keyword tags let you assign descriptive, natural-language terms to images. By creating tags such as "family," "children," or "birthday," you can identify specific photos, and then simply click a tag from the list to view thumbnails of photos associated with the tag. The tags that you create are stored in a tags catalog accessible from the Navigation palette. You can create and assign as many tags as you like to an image.
To add a keyword tag to the tags catalog
.To delete a keyword tag from the tags catalog
To assign a keyword tag to one or more images
You can also assign one or more tags to the selected thumbnails by typing the text in the Tags box on the General page of the Info palette, and clicking the Add Tag button 
to the right of the text field.
To remove keyword tags from one or more images
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In the list that appears below the Tags box, click one or more tags that you want to remove, and click the Delete Tag button 
that appears to the right of the tag name.
that appears to the right of the tag name.
If the Info palette is not displayed, click the Image information button 
on the Organizer toolbar.