Apple Aperture Getting Started - Manual (Page 51)

Chapter 4 Working with Projects 51
To open a project:
m Select the project in the Projects panel.
To open additional projects in the Browser:
m Command-click a project in the Projects panel.
The newly opened project appears in the Browser with its own tab, in front of any
other open projects.
To open another project in its own pane:
m Option-click a project in the Projects panel.
The newly opened project appears in the Browser in its own pane.
To switch between several open projects:
m In the Browser, click a project’s tab.
Select a project to view
its images in the Browser.
All images in the project
appear in the Browser.
Projects are identified
by their tabs.