One of Lion’s biggest new features is totally new Exposé. Exposé’s task is to help people navigate between windows on the desktop. Considering that most of us often have more windows open than we can actually fit on the screen, a feature like Exposé has been very useful. With Lion, Apple has decided to take Exposé one step further and it now goes by a new name: Mission Control.

While Exposé was strictly limited to the apps open in your desktop (or one Space), Mission Control breaks the limits and adds Spaces into the mix. To simplify, Mission Control is just a combined version of old Exposé, Spaces, and the Dashboard.

On the top, you have your available Spaces (and remember, each full screen app you have open will show up as its own Space). You can easily add a new Space by taking your mouse to the top right corner and clicking. The center is taken by Exposé-like app switcher which groups all your open windows togehter by app. If you have for instance three Safari windows open, they will be grouped together. The bottom is taken by Dock, which shows you what apps you have open.

Mission Control isn't as simple as the old Exposé, and if you have absolutely no use for Spaces, then I can see why you would like to use the old Exposé instead. The old Exposé was better at switching between random windows while Mission Control does a better job of switching between apps thanks to its neater grouping.

There is one disadvantage compared with Exposé though: if you minimize a window into app icon in the Dock, that window doesn't show up in Mission Control. The only way I’ve found is to use the Application Exposé, which is still present, by right-clicking the Dock icon and selecting “Show All Windows” (or, if you have a multitouch device, doing a two-fingered double tap on the app's icon in the Dock). For me, this is a big setback as I used that feature extensively and it's now more difficult to take advantage of. 

Some avid Spaces users might also prefer the old Spaces, as you could have the whole screen dedicated to switching between Spaces if you wanted. Now you only have roughly 20% of the screen for Spaces when in Mission Control. It can be hard to switch between Spaces because the thumbnails in Mission Control are so small that you can’t easily see what's in each one.

While it’s not a big surprise, the old Exposé and Spaces are dead so there is not an option to disable Mission Control and use them instead. It's possible that third party software will bring back the old Exposé and/or Spaces, but no announcements have been made so far.

I think Mission Control does great job for the people it’s aimed at: consumers. The average user most likely won’t need more than five Spaces, of which the majority will be full screen applications. For that use, Mission Control is brilliant. Personally, I never used Spaces with Leopard or Snow Leopard but I find myself using Spaces daily in Lion. In earlier versions of OS X, Spaces was a feature that was a bit hidden - there was no dedicated button for it and it didn’t feel as integrated as it does with Lion, and Spaces simply didn’t feel as easy to use. Mission Control integrates Spaces into OS X in a much more convenient way. 

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  • quiksilvr - Wednesday, July 20, 2011 - link

    $29 is indeed a solid improvement. However, given the Mac Store now being out there, their desktop OS should follow the formula of their mobile OS: Free to upgrade. These features are nice but I can't help shake the feeling that these are Service Packs (because they are). And with their "app" store available on the OS and the means of most of their cash inflow, it makes more sense to make this a free upgrade for everyone instead of a $29 upgrade.
  • xype - Wednesday, July 20, 2011 - link

    Service packs? Are you serious? Read up on the changes and try to come up with one service pack that changed as much.

    Some people…
  • danielkza - Wednesday, July 20, 2011 - link

    XP SP3 would be a good candidate, but yes, 10.7 is a bit beyond what one could reasonably call a Service Pack.
  • Taft12 - Wednesday, July 20, 2011 - link

    You're thinking of XP SP2, and if you have to go back 7 years to come up with a comparable "service pack", it's certainly fair to say OSX 10.7 is more than a service pack.
  • AfroPhysics - Friday, July 22, 2011 - link

    I fail to see how the age of the service pack matters. Xype asked for an example and qualified nothing.
  • ltcommanderdata - Wednesday, July 20, 2011 - link

    Are we really going through the tired argument that every 10.x update to OS X is just a service pack and should be free? Then at what point should Apple try to recoup costs for OS development, because even if individual point updates are evolutionary, going from the original 10.0 to 10.7 has got to be a major change in anyones eyes. And the same questions could be raised about Windows NT 6.1 aka Windows 7 where the server version is bluntly labeled Windows 2008 R2 and Windows NT 6.0 aka Vista/2008 or Windows NT 5.1 aka XP and Windows NT 5.0 aka 2000.

    Besides, even if you discount the user facing changes, Lion has seem some major security infrastructure changes. Both the 32-bit and 64-bit kernel have been rewritten with full NX-bit and ALSR support as in place in Windows Vista/7 addressing the major security complaint Charlie Miller had with OS X. Application sandboxing frameworks are now available and soon to be mandatory for Lion apps in the Mac App Store which I believe is a security feature that even Windows isn't pushing yet. With the dropping of the Core Duo, the Lion has also be rewritten to make more use of SSSE3 instead of just SSE3 as pointed out by the Hackintosh community. Lion isn't just Snow Leopard with a few features added on top, but the entire OS has seem updates at a low level even if the user might not necessary see all the differences.
  • ltcommanderdata - Wednesday, July 20, 2011 - link

    And about the App Store being a major source of income for Apple, Apple has consistently said they aim to run their stores as a break even venture.

    http://www.macrumors.com/2011/07/19/apple-reports-...

    I'm not clear if the iTunes Store in the graphic in the above link includes the App Store, but at the very least as an example of Apple's digital store, the revenue stream really hasn't increased in the last 2 years. Apple's sales growth is clearly from their hardware, iPhone, iPad, and even Mac.
  • GotThumbs - Wednesday, July 20, 2011 - link

    $1,634,000,000 in revenue from Other Music Related Products and Services (3)

    (3) Includes sales from the iTunes Store, App Store, and iBookstore in addition to sales of iPod services and Apple-branded and third-party iPod accessories

    I'd say their goal of a break even venture is not an accurate description of their stores. Hence the creation of the MAC Store. It sounds like a nice thought, but Apple is in business to make money and it seems their VERY good at it. Perhaps their projection analysis was a bit off.

    Hey, this is good news for the investors and I understand that they are a business. Lets not be too naive and just don't drink the cool-aid.
  • ltcommanderdata - Wednesday, July 20, 2011 - link

    Perhaps my finance terms are wrong, but I'd hope the Apps Store is taking in revenue. But if Apple should be offering some of their other products like OS X updates for free, shouldn't we be concerned with whether the App Store is making major profits, such that there is money to spare to pay for OS development?
  • solipsism - Wednesday, July 20, 2011 - link

    Revenue ≠ Profit

    They've paid billions to both developers, and music and video cotent owners. They've also spent money on the infrastructure to support their stores. I'm sure they're making a profit as all good for-profit companies should, but it's not the cash cow you've attempted to present here.

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