In Keynote (and also in PowerPoint), a build refers to the appearance and/or disappearance of elements (such as text, bullets, images, audio and movies) within a given slide.

Working with builds is relatively straightforward. You select the item(s) that you want to create a build for and then choose the order to activate or deactivate each element. These controls are accessible via the Build Inspector pane, which you can get to by clicking on Inspector button or with the Command-Option-i keyboard shortcut. By default, builds are activated by a click with your mouse, or via the spacebar or right-arrow key on your keyboard.

There may be times when you want to add some creativity and more Steve-ness to your builds, and automated builds provide you this functionality.

In this picture, I have three elements that I want to "build in," or have appear, on the screen. I want "Who?" to show up first, "What?" to show up second, and "I don't know" to show up third

Using the Keynote defaults, these elements would show up in the order that I click: "Who?" after the first click, "What?" after the second click, and "I don't know" after the third click.

But let's say I wanted "What?" and "I don't know" to automatically appear in sequence after I click on "Who?" To do this, I just need to change the "Start Build" options of both elements. For the "What?" build, instead of choosing "On Click," I'm going to choose the "Automatically after Build 1." And for the "I don't know" build, I'm going to choose "Automatically after Build 2." Now, "What" and "I don't know" will automatically build in after "Who?" is clicked.

One neat thing about automatic builds is that they can apply to "actions" as well. So if, in this baseball example, we want the elements to move to different bases after a build, we would apply the same "Automatically after..." logic to them.

Got more Keynote tips (or want more)? Let us know in the comments.

iWork.com

• Automatic email notification. Now the iWork.com beta lets you stay up to date whenever viewers add new comments or notes to your posted documents. You can choose to be notified immediately, hourly, or daily.

• Enhanced security. Automatic 128-bit SSL encryption now safeguards communication between you and your viewers via iWork.com. You can also password-protect documents you share on iWork.com-so even if someone has a link to your document, they won't be able to view it without the password you supply.

• Refined user interface. The redesigned Shared Documents page includes thumbnail previews so you can more easily identify your shared iWork files. You can also organize your shared documents by date, name, size, or comments received. And you can now access all your shared documents by signing in at www.iwork.com.

Out of the box, Apple's Keynote is a gem. The app is intuitive and, like many Apple products, strikes a nice and delicate balance between ease-of-use for novice users and functionality for more advanced power users. While Keynote offers a nice set of built-in themes, there may be times when you want a more customized look -- be it a different resolution, font, background or element or graphic.

To begin, choose an existing theme. Here, I'm choosing to use the default "White" Keynote theme. Then, you'll want to modify the master slides, which is accessible by pulling down the divider adjacent to the "Slides" viewer, or by clicking "View" and selecting "Show Master Slides."

I recently noted the image-editing functionality of Preview.app, which can act as a "good enough" image editor for many that don't have access to Photoshop. While it's difficult to argue with the free price tag, Preview is not without its limitations. Fortunately, many of these limitations are unlocked if you happen to own Apple's iWork suite, which in its own right can serve as an image editor for the budget-minded.Read on to see how to use iWork in this unconventional way.

Mockapp.com has created both Keynote and PowerPoint templates of iPhone UI elements, and has made them available as free downloads. Say you had a dream in the middle of the night about the most awesome iPhone app that, to your surprise, no one has thought of yet. Instead of waking up in a deep sweat and scribbling said ideas on paper, you could dream them up on Keynote.

After mapping out your concept on Keynote, you could then pitch it to others in a Keynote presentation. The Keynote and PowerPoint templates include alerts, the iPhone keyboard, arrow icons, buttons, as well as a host of other UI elements.