Buttons: Specifies the type of buttons to use to select numbers.
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None: Specifies that the user must enter the number manually by using a keyboard.
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Vertical Arrows: Specifies that the user can use manual entry or change the number by using the vertical arrow buttons on the right side of the reply box.
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Horizontal Arrows: Specifies that the user can use manual entry or change the number by using the horizontal arrow buttons on the right side of the reply box.
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Plus and Minus: Specifies that the user can use manual entry or change the number by using the horizontal
and 
buttons on the right side of the reply box. -
Dropdown Calculator: Specifies that the user can use manual entry or calculate the number by using a calculator that drops down from the arrow on the right side of the reply box.
Alignment: Specifies the alignment of the text in the reply box. To use the alignment that is specified by the Reading Order setting, select Auto.
Reading Order: Specifies the reading order for the reply box. To use the reading order that is configured on the Form property page, select Auto.
Increment: Specifies the amount by which the numerical value increases with each button click. If Increment is set to "0", the user must enter the number entered manually by using a keyboard.
Read Only: Prevents the user from modifying the default reply at print time.