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10.7: Enabling Java Apps
If Java won't run under Lion for you, a solution to this 'problem' may be as simple as enabling a Java VM. By default, Java is disabled (and probably not even installed) in 10.7.

Try the following:

Go to Applications » Utilities and open the Java

Make sure the checkbox at the top is 'checked' in order to enable Java in Lion. If Java is not already installed, you may be asked to do so first.

[crarko adds: When I did this I was asked to download the Java VM using Software Update. It appears to have become an optional install, like Rosetta was with Snow Leopard. It also looked like this was still the Apple Java VM, and not an Oracle-produced version, although I can't say so for certain.]
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Microsoft Outlook Rules setup after a clean install Apps
Are you reinstalling Outlook 2011 and want to reuse your existing rules? I had too many mail rules to type in again and thought there would be a better way.

I had performed a clean install of Lion and then reinstalled MS Office 2011. There was no way to export/import the existing rules I had created in the Snow Leopard install of Outlook 2011. I tried copying the rules to the correct directory within Lion with the faint hope that the new install of Outlook would recognize them, but that didn't work.

What did work was this. After copying the existing rules to the new Lion install I ran the Rebuild Database Utility in Outlook. The rules were processed and added to the list.

There were minor errors related to categories but that was because I hadn't created the corresponding categories in the new install. This was much faster and more accurate than retyping all of them.

[crarko adds: If you find yourself in a similar situation, give this a try.]
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10.7: Full screen Safari Apps
Admittedly, this may be more of an observation than hint. On most full screen apps I use (Reeder for Mac, Mail, the fugly iCal) you don't typically need another window.

I have always had Safari to open new windows as tabs. I think this may now be the default in full screen mode. If you want another full screen invocation of Safari, just hit Command+N.

By extension: each Safari window with its own set of tabs can independently be in full screen mode or not.

[crarko adds: This doesn't actually run a second copy of Safari, it just creates a new Space and puts the new full screen window in it. It looks like Preview does something similar when you open multiple documents while running full screen.]
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Control over your Screenshots with Preview Apps
You can take screenshots with keyboard shortcuts, the Grab application, or third-party applications. The Lion version of Preview takes screenshots now, too.

In Preview, select File » Take Screenshot, and select from the three options: From Selection; From Window; or From Entire Screen.

When you select your menu item, an overlay appears reminding you what to do next. You can use the Application Switcher (Cmd+Tab), Mission Control, or left-right trackpad swiping to get to the desired desktop and application. Then select the desired screen area or window and click to take your screenshot. You can't take a screenshot of menus this way because you have to click to bring up a menu. (For that, select the desired menu/submenu and use the good, old Cmd+Shift+4 » Space bar keyboard shortcut.)

OK, so why go to all this trouble when I can just use Cmd+Shift+3 or Cmd+Shift+4 to do the exact same thing with a lot less trouble? Well, frankly, most of the time you wouldn't. But Preview has some nifty tricks up its sleeve that it's inherited from the venerable Grab application.

Selecting the From Entire Screen option gives you a 10 second countdown so you can get things just the way you want, which with Mission Control and Spaces is easier than ever because you can setup one desktop for your screenshot and open Preview in another. You have time to position the cursor where you want it, too.

After you take the screenshot, instead of dropping a new file on to your desktop, the new image opens right up in Preview where you can edit it as desired, including cropping out undesired parts and adding annotations. Click the Close button (or the Save... or Export... menu item) and you can choose from one of six different image formats, including JPEG, PDF, or even OpenEXR. You can name it and save it wherever you want, and there's Versions and Full Screen support, too. (Full screen screenshot pranks, anyone?)

Longtime users of Grab will likely say, 'So what?; But Preview has incorporated Grab's features and brought them nicely forward with support for the latest APIs and UI features. You've heard of Grab, right?

A little history: A hold over from NeXSTEP/OpenStep, Grab is an odd little app that's been around since the very first version of Mac OS X. lives on in Lion; version 1.6 (build 109) copyright 1995-2011 is in your Utilities folder.

[crarko adds: Grab was always one of those programs I saw people having difficulty understanding how to use. It was kind of a strange process, not unlike taking a screenshot in Windows. This way seems to be far more intuitive.

*Changed from a 10.7-only hint as people have noted this is also present in earlier versions.*]
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10.7: Four-Finger flip in Mail Apps
There was once a hint that worked for previous versions of Mail about three-fingered scrolling to flip through messages.

With Lion, the three-fingered flip now launches Mission Control, so navigating through Mail messages has changed to a FOUR-fingered flip. It took me a while to figure it out on the Magic Trackpad -- it seems to call for a little practice.

A flip Up/Left brings you to the next message up the list; a flip Down/Right brings you to the next message down.

[crarko adds: This is starting to take on the feel of learning to play a new musical instrument, which is not all bad, and possibly intentional on Apple's part.]
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10.7: See and manage full conversations in both message list and preview Apps
Mail's 'Include related messages' preference shows sent messages together with received in the preview pane, however it fails to show them in the message list. It also doesn't send them to the trash when deleting a thread.

I replaced Inbox in my favorites bar in Mail with Conversations, which is a smart mailbox containing all messages that are in Inbox or in Sent. Now, not only do I see related messages on the right, if I open a thread on the left, they're all there, too. Plus, when I'm done with a thread and I choose to delete it, all the related messages also get deleted, instead of sticking around in my Sent mailbox.

[crarko adds: Good use of a smart mailbox.]
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10.7: Make DVD Player work with external drives Apps
The same instructions that work in 10.6 work with the DVDPlayback executable in 10.7.

See the original hint for 10.6.

My 10.7 had 4 instances of 'Internal' that I replaced with 'External.'

Many thanks to the original poster.

[crarko adds: This is even more relevant as the internal optical drive starts becoming an endangered species. Please note the precautionary warnings in the original hint.]
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10.7: Improved Dictionary choices Apps
Until 10.7 was released, the only English language options in the Dictionary utility were for US English.

We've now got options for British English. There are now both the Oxford Dictionary of English 3rd edition © 2010 and the Oxford Thesaurus of English 2nd edition © 2006.

It's not immediately obvious that more options exist due to the new scroll bar display.

Open Dictionary (it lives in /Applications in case you didn't know) and select Dictionary » Preferences. Scroll down the list of options and enable the two British options. Then click on them and drag them to the top so they take precedence.

You can leave the two existing American options enabled for the odd occasions that they might be useful. This tip pre-supposes, naturally, that British English is a better choice for you than the US dialect.

The other options previously available in Snow Leopard appear to remain largely unchanged. (The New Oxford American Dictionary has been upgraded from the 2nd edition to 3rd.)

[crarko adds: Nice to have the new options for our friends across the Pond.]
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10.7: Quick Look links in Mail Apps
10.7 adds a Quick Look option to Mail for viewing webpage URLs in emails.

In Mail, just right-click (Control+click) a link in an email and select 'Quick Look URL' from the contextual menu.

[crarko adds: When I tried this the Data Detectors in Mail identified some URLs and gave me this option. Curiously, with others right-clicking on them just opened the link in Safari. I'm not sure how it made the distinction. Also, the time it took for the Quick Look preview to appear was pretty long. It's probably just as effective to open the link in a browser. Nevertheless, it is a feature to document, so here it is.]
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Extract images from iWork apps Apps
A previous hint described how to extract images from Keynote by opening the file package. The latest iWork versions use compressed packages which add another step to that process. A simpler alternative is using the inspector palette within the program.

To extract the original image from an iWork application:
  • Select the image you want.
  • Open the inspector palette and select the Metrics tab. (The one with the ruler.)
  • The first item 'File info' shows a file icon and name.
  • Drag that icon to Finder and you have your original image.
Credit goes to Peter Bries in the Apple Discussion Forums for reporting this.

[crarko adds: I tried it, and it worked in Pages.]
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