Apple Macintosh PhotoFlash - Manual (Page 12)

PhotoFlash allows you to create collections of images called catalogs. You can
use catalogs to organize images that you want to group together. For example,
you could create a catalog that represents all the images you want to use in
one issue of a newsletter, or all your photos from a vacation, or all the images
for a chapter of a book. You can also manipulate multiple images at the same
time from within a catalog.
A catalog is a PhotoFlash document that you can save and open like other
documents. When you open a catalog, you see a series of
thumbnails, or small
reproductions of the images that it represents. You can arrange a catalog’s
thumbnails in any order you like; add to or remove them; or search for
specific images by name, by caption text, or by their resemblance to other
images or a rough sketch.
A catalog doesn’t contain the actual image files that correspond to each
thumbnail. Instead, it contains a small copy (the thumbnail) of each file
and keeps track of the file’s location. The arrangement of thumbnails in a
catalog is completely independent of the arrangement of the image files on
your hard disk.
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Using Catalogs