Three Guys and a Podcast: Apple News & Analysis
In Mac OS X Leopard (10.5), Apple introduced the concept of Spaces. Spaces were essentially multiple desktops on a single monitor. In Leopard and Snow Leopard you could arrange a grid of Spaces (desktops) that made it easier to manage multiple open apps and windows at once. For example you could make it so when you opened Safari it always opened in Space 1, Mail in Space 2, Calendar in Space 3 and so on.
Then in Lion, Apple folded Exposé and Spaces into Mission Control. Mission Control was Apple’s new app and window management system that let you organize and find apps like on an iOS device. In addition Mission Control took over the window management of Spaces and Exposé.This change was essentially a step sideways for desktop management rather than a leap forward. In other words it was different, but not necessarily better.
However, now in OS X Mavericks, Spaces has completely disappeared as a term in the OS and the functionality has been totally usurped by Mission Control. Once you understand how it works, it actually is better than the Lions or the Leopards operating system implementations.
Controlling Spaces is really straight-forward in Mavericks. To start Mission Control press F3 (or on some keyboards Option + Down Arrow. Along the top you will have a mini version of each Space/Desktop. To rearrange, just click-drag to the left or right (like moving an app on an iOS device). To delete a desktop, hover over it an a black X appears in the top left corner (like deleting an app on an iOS device). To add a space, move your mouse to the upper right corner and a plus sign will appear. Click the plus sign and you have a new Space/Desktop.
What's more is each screen can have separate spaces. For example you can have five main screen spaces and just two external screen spaces. Spaces can also be full view apps. This control is really quite powerful and again a much more mature version of desktop and window management.
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