iPhone THE MISSING MANUAL - Cdn.oreilly.com

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so on. You can also choose Off, if you want the music to play just the way
the record company released it.
Volume Limit. It’s well established that listening to loud music for a long
time can damage your hearing. It’s also well established that parents
worry about this phenomenon. So all iPods, and the iPhone, include an
optional, password-protected maximum-volume control. The idea is that
if you give your kid an iPhone (wow, what a generous parent!), you can
set a maximum volume level, using the slider on this screen.
If you do adjust this slider, you’re also asked for a four-digit password,
to prevent your kid from bypassing your good intentions and dragging
the slider right back to maximum. (The password isn’t especially hard to
bypass.)
Needless to say, the risk of hearing damage exists only when you’re wearing
iPhone earbuds. Music pumped through the tiny speaker wouldn’t damage a
gnat’s hearing.
Photos
All of the options here govern the behavior of the photo slideshows described
on page 95.
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Play Each Slide For. How long do you want each photo to remain on
the screen? You can choose 2, 3, 5, 10, or 20 seconds. (Hint: 2 is plenty, 3
at most. Anything more than that will bore your audience silly.)
Transition. These options are visual effects between slides: various crossfades,
wipes, and other transitions.
Repeat, Shuffle. These options work just as they do for music. Repeat
makes the slideshow loop endlessly; Shuffle plays the slides in random
order.
Chapter 13