Chapter 10. The Free Programs

Right out of the box, Mac OS X comes with a healthy assortment of about 50 freebies: programs for sending email, writing documents, doing math, even playing games. Some have been around for years. Others, though, have been given extreme makeovers in Snow Leopard. They’re designed not only to show off some of Mac OS X’s most dramatic technologies, but also to let you get real work done without having to invest in additional software.

A broad assortment of programs sits in the Applications folder in the main hard drive window, and another couple dozen less frequently used apps await in the Applications→Utilities folder.

This chapter guides you through every item in your new software library, one program at a time. (Of course, your Applications list may vary. Apple might have blessed your particular Mac model with some bonus programs, or you may have downloaded or installed some on your own.)

The Address Book is a database that stores names, addresses, email addresses, phone numbers, and other contact information. See To Do List: Mail/iCal Joint Custody.

This software-robot program is introduced in Chapter 7.

The Calculator is much more than a simple four-function memory calculator. It can also act as a scientific calculator for students and scientists, a conversion calculator for metric and U.S. measures, and even a currency calculator for world travelers.

The little Calculator widget in the Dashboard is quicker to open, but the standalone Calculator program is far more powerful. For example:

Calculator is more than a calculator; it’s also a conversion program. No matter what units you’re trying to convert—meters, grams, inches, miles per hour, money—Calculator is ready.

Now, the truth is, the Units Converter widget in Dashboard is simpler and better than this older Calculator feature. But if you’ve already got Calculator open, here’s the drill:

The next time you want to make this kind of calculation, you can skip steps 2, 3, and 4. Instead, just choose your desired conversion from the Convert→Recent Conversions submenu.

Calculator is especially amazing when it comes to currency conversions—from pesos to American dollars, for example—because it actually does its homework. It goes online to download up-to-the-minute currency rates to ensure that the conversion is accurate. (Choose Convert→Update Currency Exchange Rates.)

Mac OS X comes with only one game, but it’s a beauty (Figure 10-2). It’s a traditional chess game played on a gorgeously rendered board with a set of realistic 3-D pieces.

When you launch Chess, you’re presented with a fresh, new game that’s set up in Human vs. Computer mode—meaning that you, the Human (light-colored pieces) get to play against the Computer (your Mac, on the dark side). Drag the chess piece of your choice into position on the board, and the game is afoot.

If you choose Game→New Game, however, you’re offered a pop-up menu with choices like Human vs. Computer, Human vs. Human, and so on. If you switch the pop-up menu to Computer vs. Human, you and your Mac trade places; the Mac takes the white side of the board and opens the game with the first move, and you play the black side.

On some night when the video store is closed and you’re desperate for entertainment, you might also want to try the Computer vs. Computer option, which pits your Mac against itself. Pour yourself a beer, open a bag of chips, and settle in to watch until someone—either the Mac or the Mac—gains victory.

Choose Chess→Preferences to find some useful controls like these:

Dashboard, described in Chapter 5, is a true-blue, double-clickable application. As a result, you can remove its icon from your Dock, if you like.

For word nerds everywhere, the Dictionary (and thesaurus) is a blessing—a handy way to look up word definitions, pronunciations, and synonyms. To be precise, Snow Leopard comes with electronic versions of multiple reference works in one:

Mac OS X also comes with about a million ways to look up a word:

DVD Player, your Mac’s built-in movie projector, is described in Chapter 11.

For details on this font-management program, see Chapter 14.

This full-screen multimedia playback program is now part of Mac OS X; it’s available even on Macs that didn’t come with Apple’s slim white remote control. Chapter 15 has details.

GarageBand, Apple’s do-it-yourself music construction kit, isn’t actually part of Mac OS X. If you have a copy, that’s because it’s part of the iLife suite that comes on every new Mac (along with iMovie, iPhoto, and iWeb). There’s a crash-course bonus chapter on this book’s “Missing CD” page at www.missingmanuals.com.

In many ways, iCal is not so different from those “Hunks of the Midwest Police Stations” paper calendars people leave hanging on the walls for months past their natural life span.

But iCal offers several advantages over paper calendars. For example:

When you open iCal, you see something like Figure 10-4. By clicking one of the View buttons above the calendar, you can switch among these views:

In any of the views, double-click an appointment to see more about it. The very first time you do that, you get the summary balloon shown in Figure 10-4. If you want to make changes, you can then click the Edit button to open a more detailed view.

The basic iCal calendar is easy to figure out. After all, with the exception of one unfortunate Gregorian incident, we’ve been using calendars successfully for centuries.

Even so, there are two ways to record a new appointment: a simple way and a more flexible, elaborate way.

The information balloon shown in Figure 10-5 appears when you double-click a Month-view square, or double-click any existing appointment.

For each appointment, you can Tab your way to the following information areas:

Your newly scheduled event now shows up on the calendar, complete with the color coding that corresponds to the calendar category you’ve assigned.

Once you’ve entrusted your agenda to iCal, you can start putting it to work. iCal is only too pleased to remind you (via pop-up messages) of your events, reschedule them, print them out, and so on. Here are a few of the possibilities:

To edit a calendar event’s details, you have to open its Info balloon, as described in Figure 10-5.

And if you want to change only an appointment’s “calendar” category, Control-click (or right-click) anywhere on the appointment and, from the resulting shortcut menu, choose the category you want.

In both cases, you bypass the need to open the Info balloon.

You don’t have to bother with this if all you want to do is reschedule an event, however, as described next.

Just as iTunes has playlists that let you organize songs into subsets and iPhoto has albums that let you organize photos into subsets, iCal has calendars that let you organize appointments into subsets. They can be anything you like. One person might have calendars called Home, Work, and TV Reminders. Another might have Me, Spouse ’n’ Me, and Whole Family. A small business could have categories called Deductible Travel, R&D, and R&R.

To create a calendar, double-click any white space in the Calendar list (below the existing calendars), or click the button at the lower-left corner of the iCal window. Type a name that defines the category in your mind.

To change the color-coding of your category, Control-click (right-click) its name; from the shortcut menu, choose Get Info. The Calendar Info box appears. Here, you can change the name, color, or description of this category—or turn off alarms for this category.

You assign an appointment to one of these categories using the pop-up menu on its Info balloon, or by Control-clicking (right-clicking) an event and choosing a calendar name from the shortcut menu. After that, you can hide or show an entire category of appointments at once just by turning on or off the appropriate checkbox in the Calendars list.

One of iCal’s best features is its ability to post your calendar on the Web, so that other people (or you, on a different computer) can subscribe to it, which adds your appointments to their calendars. If you have a MobileMe account, then anyone with a Web browser can also view your calendar, right online.

For example, you might use this feature to post the meeting schedule for a club that you manage, or to share the agenda for a series of upcoming financial meetings that all of your coworkers will need to consult.

iCal’s Tasks feature lets you make a To Do list and shepherds you along by giving you gentle reminders, if you so desire (Figure 10-11). What’s nice is that Mac OS X maintains a single To Do list, which shows up in both iCal and Mail.

To see the list, click the pushpin button at the lower-right corner of the iCal screen. Add a new task by double-clicking a blank spot in the list that appears, or by choosing File→New To Do. After the new item appears, you can type to name it.

To change the task’s priority, alarm, repeating pattern, and so on, double-click it. An Info balloon appears, just as it does for an appointment.

To sort the list (by priority, for example), use the pop-up menu at the top of the To Do list. To delete a task, click it and then press the Delete key.

Details on the iChat instant-messaging program can be found in Chapter 21.

iDVD isn’t really part of Mac OS X, although you probably have a copy of it; as part of the iLife software suite, iDVD comes free on every new Mac. iDVD lets you turn your digital photos or camcorder movies into DVDs that work on almost any DVD player, complete with menus, slideshow controls, and other navigation features. iDVD handles the technology; you control the style.

For a primer on iDVD, see the free, downloadable iLife appendix to this chapter, available on this book’s “Missing CD” page at www.missingmanuals.com.

This unsung little program, completely redesigned in Snow Leopard, was originally designed to download pictures from a camera and then process them automatically (turning them into a Web page, scaling them to emailable size, and so on). Of course, after Image Capture’s birth, iPhoto came along, generally blowing its predecessor out of the water.

Even so, Apple includes Image Capture with Mac OS X for these reasons:

  • Image Capture is a smaller, faster app for downloading all or only some pictures from your camera (Figure 10-12). iPhoto can do that nowadays, but sometimes that’s like using a bulldozer to get out a splinter.

  • Image Capture can grab images from Mac OS X–compatible scanners, too, not just digital cameras.

  • Image Capture can download your sounds (like voice notes) from a digital still camera; iPhoto can’t.

  • Image Capture can share your camera or scanner on the network.

  • Image Capture can turn a compatible digital camera into a Webcam, broadcasting whatever it “sees” to anyone on your office network—or the whole Internet. Similarly, it can share a scanner with all the networked Macs in your office.

You can open Image Capture in either of two ways: You can simply double-click its icon in your Applications folder, or you can set it up to open automatically whenever you connect a digital camera and turn it on. To set up that arrangement, open Image Capture manually. Using the “Connecting this camera opens:” pop-up menu, choose Image Capture.

Once Image Capture is open, it looks like Figure 10-12. Its controls, once buried in menus and Preferences dialog boxes, have, in Snow Leopard, all been brought out to the main window so they’re readily available.

When you connect your camera, cellphone, or scanner, its name appears in the leftside list. To begin, click it. After a moment, Image Capture displays all the photos on the camera’s card, in either list view or icon view (your choice).

Use this pop-up menu to specify what happens to the imported pictures. Image Capture proposes putting photos, sounds, and movies from the camera into your Home folder’s Pictures, Music, and Movies folders, respectively. But you can specify any folder (choose Other from the pop-up menu).

Furthermore, there are some other very cool options here:

When the downloading process is complete, a little green checkmark appears on the thumbnail of each imported photo.

If you own a scanner, chances are good that you won’t be needing whatever special scanning software came with it. Instead, Mac OS X gives you two programs that can operate any standard scanner: Image Capture and Preview. In fact, the available controls are identical in both programs.

To scan in Image Capture, turn on your scanner and click its name in the left-side list. Put your photos or documents into the scanner.

Now you have a couple of decisions to make:

Once you’ve put a document onto it or into it, click Scan. The scanner heaves to life. After a moment, you see on the screen what’s on the glass. It’s simultaneously been sent to the folder (or post-processing task) you requested using the “Scan to” popup menu.

As you can see, Apple has tried to make basic scanning as simple as possible: one click. That idiotproof method gives you very few options, however.

If you click Show Details before you scan, though, you get a special panel on the right side of the window that’s filled with useful scanning controls (Figure 10-13).

Here are some of the most useful options:

Opening the Details panel has another handy benefit, too: It lets you scan only a portion of what’s on the scanner glass.

Once you’ve put the document or photo into the scanner, click Overview. Snow Leopard does a quick pass and displays on the screen whatever’s on the glass. You’ll see a dotted-line rectangle around the entire scanned image—unless you’d turned on “Detect separate images,” in which case you see a dotted-line rectangle around each item on the glass.

You can adjust these dotted-line rectangles around until you’ve enclosed precisely the portion of the image you want scanned. For example, drag the rectangles’ corner handles to resize them; drag inside the rectangles to move them; drag the right end of the line inside the rectangle to rotate it; preview the rotation by pressing Control and Option.

Finally, when you think you’ve got the selection rectangle(s) correctly positioned, click Scan to trigger the actual scan.

Here’s another pair of the iLife apps—not really part of Mac OS X, but kicking around on your Mac because iLife comes with all new Macs.

A basic getting-started chapter for these programs awaits, in free downloadable PDF form, on this book’s “Missing CD” page at www.missingmanuals.com.

See Chapter 6 for details on this file-synchronization software.

iTunes is Apple’s beloved digital music–library program. Chapter 11 tells all.

See Chapter 19 for the whole story.

It may be goofy, it may be pointless, but the Photo Booth program is a bigger time drain than Solitaire, the Web, and Dancing with the Stars put together.

It’s a match made in heaven for Macs that have a tiny video camera above the screen, but you can also use it with a camcorder, iSight, or Webcam. Just be sure the camera is turned on and hooked up before you open Photo Booth. (Photo Booth doesn’t even open if your Mac doesn’t have some kind of camera.)

Open this program and then peer into the camera. Photo Booth acts like a digital mirror, showing whatever the camera sees—that is, you.

But then click the Effects button. You enter a world of special visual effects—and we’re talking very special. Some make you look like a pinhead, or bulbous, or like a Siamese twin; others simulate Andy Warhol paintings, fisheye lenses, and charcoal sketches (Figure 10-14). In the Snow Leopard version, in fact, there are four pages of effects, nine previews on a page; click the left or right arrow buttons, or press ⌘-← or ⌘-→, to see them all. (The last two pages hold backdrop effects, described below.)

Some of the effects have sliders that govern their intensity; you’ll see them appear when you click the preview.

Photo Booth can also record videos, complete with those wacky distortion effects. Click the third icon below the screen, the Movie icon (Figure 10-14), and then click the camera button (or press ⌘-T). You get the 3-2-1 countdown—but this time, Photo Booth records a video, with sound, until you click the Stop button or the hard drive is full, whichever comes first. (The little digital counter at left reminds you that you’re still filming.) When it’s over, the movie’s icon appears in the row of thumbnails, ready to play or export.

Or choose Edit→Auto Flip New Photos if you want Photo Booth to do the flipping for you from now on.

To look at a photo or movie you’ve captured, click its thumbnail in the scrolling row at the bottom of the screen. (To return to camera mode, click the camera button.)

Fortunately, these masterpieces of goofiness and distortion aren’t locked in Photo Booth forever. You can share them with your adoring public in any of four ways:

Similarly, you can click your favorite one pane of a 4-up image to serve as your account photo—it expands to fill the Photo Booth screen—before clicking Account Picture.

And speaking of interesting headshots: If you export a 4-up image and choose it as your buddy icon in iChat (Chapter 21), you’ll get an animated buddy icon. That is, your tiny icon cycles among the four images, creating a crude sort of animation. It’s sort of annoying, actually, but all the kids are doing it.

As you set off on your Photo Booth adventures, a note of caution: Keep it away from children. They won’t move from Photo Booth for the next 12 years.

Preview is Mac OS X’s scanning software, graphics viewer, fax viewer, and PDF reader. It’s always been teeming with features that most Mac owners never even knew were there—but in Snow Leopard, it’s been given even more horsepower.

One hallmark of Preview is its effortless handling of multiples: multiple fax pages, multiple PDF files, batches of photos, and so on. The key to understanding the possibilities is mastering the Sidebar, shown in Figure 10-15. The idea is that these thumbnails let you navigate pages or graphics without having to open a rat’s nest of individual windows.

To hide or show the Sidebar, press Shift-⌘-D (or click the Sidebar button in the toolbar, or use the View→Sidebar submenu). Once the Sidebar is open, the four tiny icons at the bottom let you choose among four views:

Preview, as you’re probably starting to figure out, is surprisingly versatile. It can display and manipulate pictures saved in a wide variety of formats, including common graphics formats like JPEG, TIFF, PICT, and GIF; less commonly used formats like BMP, PNG, SGI, TGA, and MacPaint; and even Photoshop, EPS, and PDF graphics. You can even open animated GIFs by adding a Play button to the toolbar, as described on The Toolbar.

Preview is no Photoshop, but it’s getting closer every year. Let us count the ways:

Here’s a Photoshoppy feature you would never, ever expect to find in a simple viewer like Preview: You can extract a person (or anything, really) from its background. That’s handy when you want to clip yourself out of a group shot to use as your iChat portrait, when you want to paste somebody into a new background, or when you break up with someone and want them out of your photos.

Don’t worry if you’re not exact; you’ll be able to refine the outline later. (Zoom in for tight corners by pressing ⌘-+.) Continue until you’ve made a complete closed loop. Or just double-click to say, “Connect where I am now with where I started.”

(Hit Esc to erase the line and start over—or give up.)

When you’re done, the outline sprouts dotted handles, as shown in Figure 10-17. You can drag them to refine the border’s edges. When the outline looks close enough, press Return or Enter.

Now you enter the Instant Alpha mode described above. If you see bits of background still showing, dab them with the mouse; they fade into the foggy “not included” area. If you accidentally chopped out a piece of your person, Option-dab. In both cases, Preview includes all pixels of the same color you dabbed, making it easy to remove, for example, a hunk of fabric.

When it all looks good, press Return or Enter. Preview ditches the background, leaving only the outlined person. If you choose File→Save As, you’ll have yourself an empty-background picture, ready to import or paste into another program.

Once you’ve exported the file, congratulate yourself. You’ve just created a graphic with an alpha channel, which, in computer-graphics terms, is a special mask that can be used for transparency or blending. The background that you deleted—the empty white part—appears transparent when you import the graphic into certain graphically sophisticated programs. For example:

In Preview, crop the document down, and save it as a PNG-format graphic (because PNG recognizes alpha channels). Then use the Instant Alpha feature to dab out the background and the gaps inside the letters. When you import this image to your Web page, you’ll find a professional-looking text banner that lets your page’s background shine through the empty areas of the lettering.

Preview is a nearly full-blown equivalent of Acrobat Reader, the free program used by millions to read PDF documents. It lets you search PDF documents, copy text out of them, add comments, fill in forms, click live hyperlinks, add highlighting, circle certain passages, type in notes—features that used to be available only in Adobe’s Acrobat Reader.

Here are the basics:

There’s a lot to say about QuickTime player, but it’s all in Chapter 15.

Apple’s Web browser harbors enough tips and tricks lurking inside to last you a lifetime. Details in Chapter 20.

Stickies creates virtual Post-it notes that you can stick anywhere on your screen—a triumphant software answer to the thousands of people who stick notes on the edges of their actual monitors. Like the Stickies widget in Dashboard, you can open this program with a keystroke (highlight some text, then press Shift-⌘-Y)—but it’s a lot more powerful.

You can use Stickies to type quick notes and to-do items, paste in Web addresses or phone numbers you need to remember, or store any other little scraps and snippets of text you come across. Your electronic Post-it notes show up whenever the Stickies program is running (Figure 10-20).

The first time you launch Stickies, a few sample notes appear automatically, describing some of the program’s features. You can quickly dispose of each sample by clicking the close button in the upper-left corner of each note or by choosing File→Close (⌘-W). Each time you close a note, a dialog box asks if you want to save it. If you click Don’t Save (or press ⌘-D), the note disappears permanently.

To create a new note, choose File→New Note (⌘-N). Then start typing or:

Have a favorite style for your sticky notes? First create a new note, choosing the color and text style that you like and setting it to the size you prefer. Then choose Note→Use as Default. All new notes you create now appear in the size, font, and color you’ve chosen.

The notes you create in Stickies last only as long as you keep them open. If you close a note to get it out of the way (and click Don’t Save in the confirmation box), it vanishes permanently.

If you want to preserve the information you’ve stuffed into your notes in a more permanent form, use File→Export Text to save each note as a standalone TextEdit document. When you use the Export Text command, you have the following options:

This program opens the door to the nerve center of Mac OS X’s various user preferences, settings, and options. Chapter 9 covers every option in detail.

TextEdit: It’s not just for Read Me files anymore.

TextEdit (Figure 10-22) is a basic word processor—but it’s not nearly as basic as it used to be. You can create real documents with real formatting, using style sheets, colors, automatic numbering and bullets, tables, and customized line spacing, and—get this—even save the result as a Microsoft Word document. There’s even a multiple-level Undo command. If you had to, you could write a novel in TextEdit, and it would look pretty decent.

There aren’t any new features in TextEdit in Snow Leopard. There is, however, a long list of new text-editing features in Snow Leopard: smart links, smart quotes, smart dashes, smart copy/paste, abbreviation expansion, auto-typo correction, data detectors, and so on. They’re all described in Chapter 6, and they all work in TextEdit.

As you begin typing, all the usual word processing rules apply, with a few twists:

A style is a prepackaged collection of formatting attributes that you can apply and reapply with a click of the mouse (bold, 24-point Optima, double-spaced, centered, for instance). You can create as many styles as you need: chapter headings, sidebar styles, and so on. You end up with a collection of custom-tailored styles for each of the repeating elements of your document.

Once you’ve created your styles, you can apply them as you need them, safe in the knowledge that they’ll be consistent throughout the document. During the editing process, if you notice you accidentally styled a headline using the Subhead style, you can fix the problem by simply reapplying the correct style.

Tables can make life a heck of a lot easier when you want to create a resumé, agenda, program booklet, list, multiple-choice test, Web page, or another document where numbers, words, and phrases must be aligned across the page. In the bad old days, people did it by pressing the Tab key to line up columns—a technique that turned into a nightmare as soon as you tried to add or delete text. But using a word processor’s table feature is light-years easier and more flexible, because each row of a table expands to contain whatever you put into it. Everything else in its row remains aligned.

The new Table palette isn’t the only clue that Apple intends TextEdit to be a quick-and-dirty Web page design program. Consider these other tools:

Most of the settings in the TextEdit Preferences→New Document pane have no effect on documents that are already open—only on documents you open or create from now on. Most of the settings are self-explanatory; nonetheless, handy explanatory balloons appear if you point to an option without clicking. Here are a few settings that may not be immediately clear:

This marquee feature of Mac OS X is described in Chapter 6.

The Utilities folder (inside your Applications folder) is home to another batch of freebies: a couple of dozen tools for monitoring, tuning, tweaking, and troubleshooting your Mac.

The truth is, you’re likely to use only about six of these utilities. The rest are very specialized gizmos primarily of interest to network administrators or Unix geeks who are obsessed with knowing what kind of computer-code gibberish is going on behind the scenes.

Activity Monitor is designed to let the technologically savvy Mac fan see how much of the Mac’s available power is being tapped at any given moment.

Even when you’re only running a program or two on your Mac, dozens of computational tasks (processes) are going on in the background. The top half of the dialog box, which looks like a table, shows you all the different processes—visible and invisible—that your Mac is handling at the moment.

Check out how many items appear in the Process list, even when you’re just staring at the desktop. It’s awesome to see just how busy your Mac is! Some are easily recognizable programs (such as Finder), while others are background system-level operations you don’t normally see. For each item, you can see the percentage of CPU being used, who’s using it (either your account name, someone else’s, or root, meaning the Mac itself), whether or not it’s been written as a 64-bit app, and how much memory it’s using.

Or use the pop-up menu above the list to see views like these:

At the bottom of Activity Monitor, you’re offered five tabs that reveal intimate details about your Mac and its behind-the-scenes efforts (Figure 10-25):

This program has developed a split personality in Snow Leopard. Its name is now a literal description of its two halves.

If you use ColorSync, then you probably know already that this utility is for people in the high-end color printing business. Its tabs include these two:

The other tabs are described on ColorSync.

DigitalColor Meter can grab the exact color value of any pixel on your screen, which can be helpful when matching colors in Web page construction or other design work. After launching the DigitalColor Meter, just point anywhere on your screen. A magnified view appears in the meter window, and the RGB (red-green-blue) color value of the pixels appears in the meter window. You can display the color values as RGB percentages or actual values, in Hex form (which is how colors are defined in HTML; white is represented as #FFFFFF, for example), and in several other formats.

Here are some tips for using the DigitalColor Meter to capture color information from your screen:

This important program serves two key functions:

The following discussion tackles the program’s two personalities one at a time.

Here are some of the tasks you can perform with this half of Disk Utility:

Chapter 12 has a much more detailed discussion of permissions.

If you turn on Erase Destination, Disk Utility obliterates all the data on your target disk before copying the data. If you leave this checkbox off, however, Disk Utility simply copies everything onto your destination, preserving all your old data in the process. (The Skip Checksum checkbox is available only if you choose to erase your destination disk. If you’re confident all the files on the source disk are 100 percent healthy and whole, turn on this checkbox to save time. Otherwise, leave it off for extra safety.)

Finally, click the Restore button. (You might need to type in an administrator password.) Restoring can take a long time for big disks, so go ahead and make yourself a cup of coffee while you’re waiting.

Disk images are very cool. Each one is a single icon that behaves precisely like an actual disk—a flash drive or hard drive, for example—but can be distributed electronically. For example, a lot of Mac OS X add-on software arrives from your Web download in disk-image form, as shown below.

Disk images are popular for software distribution for a simple reason: Each image file precisely duplicates the original master disk, complete with all the necessary files in all the right places. When a software company sends you a disk image, it ensures that you’ll install the software from a disk that exactly matches the master disk.

It’s important to understand the difference between a disk-image file and the mounted disk (the one that appears when you double-click the disk image). If you flip back to .sit, .zip, .tar, .gz, and .dmg and consult Figure 5-20, this distinction should be clear.

You can create disk images, too. Doing so can be very handy in situations like these:

Here’s how you make a disk image:

When you click Save (or press Return), if you opted to create an encrypted image, you’re asked to make up a password at this point.

Otherwise, Disk Utility now creates the image and then mounts it—that is, turns the image file into a simulated, yet fully functional, disk icon on your desktop.

When you’re finished working with the disk, eject it as you would any disk (Control-click it and choose Eject, for example). Hang onto the .dmg disk image file itself, however. This is the file you’ll need to double-click if you ever want to recreate your “simulated disk.”

Grab takes pictures of your Mac’s screen, for use when you’re writing up instructions, illustrating a computer book, or collecting proof of some secret screen you found buried in a game. You can take pictures of the entire screen (press ⌘-Z, which for once in its life does not mean Undo) or capture only the contents of a rectangular selection (press Shift-⌘-A). When you’re finished, Grab displays your snapshot in a new window, which you can print, close without saving, copy, or save as a TIFF file, ready for emailing or inserting into a manuscript.

Now, as experienced Mac enthusiasts already know, the Mac OS has long had its own built-in shortcuts for capturing screenshots: Press Shift-⌘-3 to take a picture of the whole screen, and Shift-⌘-4 to capture a rectangular selection.

So why use Grab instead? In many cases, you shouldn’t. The Shift-⌘-3 and Shift-⌘-4 shortcuts work like a dream. But there are some cases in which it might make more sense to opt for Grab. Here are three:

Tip

Actually, if you’re going to write a book or manual about Mac OS X, the program you really need is Snapz Pro X; a trial version is available from this book’s “Missing CD” at www.missingmanuals.com, among other places. It offers far more flexibility than any of Mac OS X’s own screenshot features. For example, you have a choice of file format, you can neatly snip out just one dialog box or window with a single click, and you can capture movies of screen activity with far more flexibility than QuickTime Player offers (Chapter 15).

This little unsung app is an amazing piece of work. It lets you create 2-D or 3-D graphs of staggering beauty and complexity.

When you first open Grapher, you’re asked to choose what kind of virtual “graph paper” you want: two-dimensional (standard, polar, logarithmic) or three-dimensional (cubic, spherical, cylindrical). Click a name to see a preview; when you’re happy with the selection, click Open.

Now the main Grapher window appears (Figure 10-29). Do yourself a favor. Spend a few wow-inducing minutes choosing canned equations from the Examples menu, and watching how Grapher whips up gorgeous, colorful, sometimes animated graphs on the fly.

When you’re ready to plug in an equation of your own, type it into the text box at the top of the window. If you’re not such a math hotshot, or you’re not sure of the equation format, work from the canned equations and mathematical building blocks that appear when you choose Equation→New Equation from Template or Window→Show Equation Palette (a floating window containing a huge selection of math symbols and constants).

Once the graph is up on the screen, you can tailor it like this:

When it’s all over, you can preserve your masterpiece using any of these techniques:

The Network Utility gathers information about Web sites and network citizens. It offers a suite of standard Internet tools like NetStat, Ping, Traceroute, Finger, and Whois—advanced tools, to be sure, but ones that even Mac novices may be asked to fire up when calling a technician for Internet help.

Otherwise, you probably won’t need to use Network Utility to get your work done. However, Network Utility can be useful when you’re performing Internet detective work.

System Profiler is a great tool for learning exactly what’s installed on your Mac and what’s not—in terms of both hardware and software. The people who answer the phones on Apple’s tech-support line are particularly fond of System Profiler, since the detailed information it reports can be very useful for troubleshooting nasty problems.

There are now three ways to open System Profiler:

When System Profiler opens, it reports information about your Mac in a list down the left side (Figure 10-31). The details fall into these categories:

Similar information shows up in the Extensions panel. In this sense, “extensions” doesn’t mean system extensions like those that made life a living hell in Mac OS 9 and earlier. In Mac OS X, the term extensions refers to a different kind of add-on component to the core system software. Generally, these are drivers for the Mac’s various components, which sit in the System→Library→Extensions folder. Whatever’s in that folder is what you see listed in this panel.

Other categories include self-explanatory lists like Fonts, Preference Panes, and Startup Items.

Finally, the Logs panel reveals your Mac’s secret diary: a record of the traumatic events that it experiences from day to day. (Many of these are the same as those revealed by the Console utility; see Method 2: fsck at the Console.) Some reveal crash logs, which are detailed technical descriptions of what went wrong when various programs crashed, and what was stored in memory at the time.

Unfortunately, there’s not much plain English here to help you understand the crash, or how to avoid it in the future. Most of it runs along the lines of “Exception: EXC_BAD_ACCESS (0x0001); Codes: KERN_INVALID_ADDRESS (0x0001) at 0x2f6b657d.” In other words, it’s primarily for the benefit of programmers. Still, tech-support staff may occasionally ask to see the information in one of these logs.