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Figure 17.46 The user enters a valid phone number (top). Parentheses and the dash
are optional; the user enters a number with too many digits, and an alert box
appears (bottom).
Go to , the World Wide Telephone Guide, to get a listing of phone
formats for the world, country by country (see Figure 17.47).
Figure 17.47 Go to to look up phone formats around the world.
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