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iPhone THE MISSING MANUAL - Cdn.oreilly.com

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Double-Tap<br />

Double-tapping is actually pretty rare on the <strong>iPhone</strong>. It’s not like the Mac or<br />

Windows, where double-clicking the mouse always means “open.” Because<br />

the <strong>iPhone</strong>’s operating system is far more limited, you open something with<br />

one tap.<br />

A double tap, therefore, is reserved for three functions:<br />

•<br />

•<br />

•<br />

In Safari (the Web browser), Photos, and Google Maps programs, doubletapping<br />

zooms in on whatever you tap, magnifying it.<br />

In the same programs, as well as Mail, double-tapping means, “restore to<br />

original size” after you’ve zoomed in.<br />

When you’re watching a video, double-tapping switches aspect ratios<br />

(video screen shape); see page 83.<br />

Two-Finger Tap<br />

This weird little gesture crops up only in one place: in Google Maps. It means<br />

“zoom out.” To perform it, you tap once on the screen—with two fingers.<br />

The Guided Tour 19

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