When iTunes 9 changed the behavior of the green "maximize" button to shrink the player to the mini player, I adapted quickly. Option-clicking is pretty easy to do since the option key (unlike control) is on both sides of my laptops' keyboards. But I forgot that option-clicking the green button on windows in OS X does other things too.

For many applications, simply option-clicking the green button will "maximize" all the open windows of that application. Of course, maximize behaves differently in some applications. For example, option-clicking the green button in Safari makes all the open pages taller, but not wider. That's by design in Safari, and I rather like it. If you come from Windows, however, you'll be mortified that the window does not occupy the entire screen. In Firefox, it does indeed maximize to fill the screen. It's a matter of preference, but the key point: option-click will max all open windows of that application. Some are "smarter" than others.

As our last trick, try option-clicking the green button Calculator. It toggles between the expanded, scientific calculator to the programmer's calculator to regular calculator. Neat!

Have you ever been playing one of your finely-tuned playlists, blissfully grooving to the music, only to connect your iPod or iPhone and lose your place? In other words, iTunes (if you've set it to automatically sync) will move your view from whatever playlist you're in to the sync window. That's handy, of course, but if you forgot which playlist you were in, it can be a pain. I have several playlists set to random, and when I try to go back, it re-shuffles the order. There are other multi-tasking issues with iTunes that largely stem from its one-window interface. If you want to browse the store and manage a playlist, for example, you're stuck doing a lot of scrolling. But iTunes isn't really one window!

If you double-click the title of a playlist, it allows you to edit the name of the playlist, right? But if you double-click the icon of a playlist (for a standard list it'll be a little blue note to the left of the title), iTunes will open an entirely new window, as seen above. You can open a bunch of these if you like and it works with TV, Movies, pretty much everything on the left side. It's much easier to drag and drop songs this way if you have a bunch of playlists. Plus, the window menu will give you quick access to whatever you opened, or you can switch through them with Exposé.

Note: yes, this has been in iTunes for a long time.

Our good friends at Download Squad found a great app on the App Store called Air Photo that will let you wirelessly print pictures directly from your iPhone or iPod touch. Just install the app (for $1.99, cheap if you print your iPhone's photos often) on your mobile device, put the server on your Mac (or PC, if you swing that way), and then you can snap and print at will. Connecting to the server from your device opens up a Bonjour window, where you can crop or adjust the picture and then print whatever you like.

While the technology itself won't be that helpful for everyone (who really prints pictures any more, especially iPhone pictures?), it is interesting to see this done so easily and well with a wireless connection. Sure, there's apps like Remote and the Keynote controllers, but it seems like the iPhone-as-wireless-accessory idea is still relatively untapped on the App Store.

Last week I told you about easily switching directories (folders) while in an open/save dialog. This was great when you knew where a folder was located in a specific place, and you could drag + drop it on the dialog. But what if you want to type in a directory path (i.e. ~/Desktop)?

While in an open/save dialog, pressing Command + Shift + G will allow you to type in a directory path. For instance, if I wanted to open my Documents directory for my user, I would type ~/Documents. The tilde (~) tells the computer to look in the current user's home directory.

Want more tips and tricks like this? Visit TUAW's Mac 101 section.

A while ago, Derek Powazek proposed an idea for a mini Mail window based on the functionality of iTunes' mini option; hit the best fit button - the green one - in iTunes to get an idea, or simply check out Derek's post for an actual screenshot mockup of the concept. Fortunately, John Gruber just caught that OliveToast software literally ran with the concept, releasing - to my absolute delight - a MiniMail plug-in for Apple Mail.

As you can see, MiniMail allows users to simply hit Mail's best fit button (or choosing Window > Zoom) to condense it to a 'just what you need' view, offering a customizable preview area and three menu buttons for performing a healthy set of operations. Fortunately, keyboard shortcuts still work fine as well, so ?-n will create a new message. Even using the arrow keys works for moving back and forth in the message list, and thankfully, the list of mailboxes is customizable for this view as well so you can see just what you need.

After a few minutes of tinkering with the demo while writing this post, I'm happy to say that the receipt for my $9 license just arrived. MiniMail rocks, and I'm so glad someone brought Powazek's concept to life, as this is the perfect compromise that I've been looking for between constantly hiding and showing Mail while still making it easy to do basic things in it on the fly. Thanks, OliveToast software.

The Get Info window works in a few similar but at times mysterious ways, and Rob Griffiths has put together an article that outlines each of its three iterations in Mac OS X 10.4 (Panther has two). While this might be rudimentary to some of you hard-core Mac OS X users out there, this is a handy feature walk-through of each slightly different version - Get Info, Super Get Info and Summary Info - for those who haven't covered this ground yet. Check it out.

Disk Order is another app that takes a stab at replacing the Finder, but doesn't seem to take things quite as overboard as PathFinder. With tabbed file browser windows, built-in FTP client, command line tools and more, Disk Order should have a few things to offer anyone who feels like the Finder is the ugly duckling of Mac OS X.

A full-featured demo of Disk Order is available, while a license costs $22.57.

[via MacMerc]

This rant about Mac OS X, multitasking and usability is brought to you by the letter Q and a disgruntled design student:

I heard something snap in my head today as I sat down at the back of an art history lecture hall (where outlets are, I follow) and got to peek over the shoulder of a girl using a 15" PowerBook in front of me.

This girl was using Safari to browse MySpace and - arguments about that site's damage to civilization as we know it aside - the browser window was 100% maximized across her 1280 x 960 display, obliterating what I would estimate is at least 1/3 of useful screen real estate. Then, she switched over to Word to keep working on a paper - again, Word had been manually maximized across the entirety of her widescreen display which was throwing easily half of her usable screen space into the garbage. Unfortunately, she is just one of many I have witnessed throwing away all sorts of useful screen space while using Mac OS X.

Men and women, boys and girls, please: Mac OS X more or less offers only one way to manually maximize windows across your entire display for a reason - because they don't have to be that large. "Multitasking" is defined as "the simultaneous execution of more than one program or task by a single computer processor." If we apply that definition to a person's ability to multitask, it means that you too are able to work on and look at more than one thing at once - which is why Mac OS X intentionally makes it difficult for one application to dominate the entirety of your display (Applications, such as Firefox, that don't obey the Mac OS X windowing rules I'm referring to are exempt from this post).

While the various tricks and design ideals that Mac OS X uses to accomplish this fantastic feat of productivity-inducing magic are outside the scope of my rant, I just want the word to get out that it is actually safe to trust your operating system's judgments in these kinds of matters. Tell your parents, inform you friends. I'm especially looking at you, switchers. I know the way Mac OS X handles windows and changing their size is strange, but trust me - once you get used to it and wrap your head around why it works this way on Apple's side of the fence, you'll be overjoyed with all the extra screen space you just reclaimed.

So go ahead, live on the edge: use that green "best fit" button and the Window > Zoom options, and be happy that you've taken a positive step towards getting just a little more done on your Mac.

Today's tip involves a Mail.app hint I found that I thought was just too handy not to mention. If you use Mail.app and you open some messages in their own window, you might have noticed that if you hit reply, the original message disappears in favor of your new message composition window. Understandably, this is a source of frustration for many a user.

Fortunately, Rob Griffiths over at Macworld has discovered a simple way around this: hold the option key when hitting Reply, Reply All or Forward, and the original message will stay put while a new, separate composition window opens. This makes it a little easier to refer back to the original message, especially if it's lengthy.

This works on Tiger's Mail.app, but I don't have any older versions of Mac OS X to verify this on. Feel free to sound off in the comments if you've tested this on Panther or even Jaguar. My one complaint about this trick: it doesn't seem to work if you use the keyboard shortcut for Reply. Holding option when hitting cmd - r results in that Funk/hault sound, informing me that the shortcut is a no-go. Either way, this should still be a handy trick for you chronic Repliers using Mail.app.

[via Hawk Wings]

For today's TUAW Tip, I thought I'd build on Scott's tip yesterday (concerning the Application Switcher) with a simple tip about cycling windows, not applications. Many of us know (or will soon) that using cmd - tab will switch between applications, but plenty of users still haven't discovered the wonders of cmd - ` (the key right above tab), which allows you to switch between windows within an application. So if you, for example, have a few documents open in Word, cmd - ` will easily let you switch between just those documents, without having to bother with any other windows and apps you have open.

One catch: this works in most apps such as browsers, iChat and even iPhoto, but not in a select few, such as Photoshop. In fact: if anyone knows how to cycle windows in Photoshop, please sound off in the comments.

Now that you're armed with both cmd - tab and cmd - `, virtually no window is safe from your view. Combine this trick with a little Exposé action and you could obtain the ranking of "OS X window management ninja."