If you have an existing object and want to resize it by a precise amount, you don’t have to re-create the box, or even do the math yourself to resize it. You can simply have InDesign do the math for you.
For example, if you have a box that measures 1.25 inches wide, but you really want it to be 1 3/8 inches wide, you can simply add +.125 to the existing 1.25 width measurement in the Control Panel input box and hit the Enter key (see image at right). While that seems trivial, the usefulness becomes apparent when you consider you can also use “/3″ to divide the width by 3, or use “-” and a number to subtract an amount, or even “*” and a number to multiply the amount.
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