Apple Aperture Getting Started - Manual (Page 85)

Chapter 7 Displaying Images in the Viewer 85
Choosing the Number of Images Displayed in the Viewer
You can specify whether the Viewer displays one image, three images, or multiple
images at a time. If your system uses multiple displays, you can configure your primary
and secondary displays to show single images, three images, or multiple images
simultaneously.
To display a single image, do one of the following:
m Choose View > Main Viewer > Primary (or press Option-R).
m Choose Primary from the Viewer Mode pop-up menu in the control bar.
When the Viewer is set to show three images at a time, Aperture displays the selected
image in the center of the three images that appear in the Viewer.
To display three images, do one of the following:
m Choose View > Main Viewer > Three Up (or press Option-H).
m Choose Three Up from the Viewer Mode pop-up menu in the control bar.
When the Viewer is set to show multiple images, Aperture displays all selected images.
To display multiple images, do one of the following:
m Choose View > Main Viewer > Multi (or press Option-U).
m Choose Multi from the Viewer Mode pop-up menu in the control bar.
Choose Primary from
the Viewer Mode pop-up
menu to view a single
image on the screen.