RectF.Expand (gb.poppler)
Sub Expand ( Left As Float [ , Top As Float, Right As Float, Bottom As Float ] )
Expand the rectangle with the specified distances.
A positive argument will expand the rectangle, whereas a negative one will shrink it.
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If Top is not specified, it will take the value of the Left argument.
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If Right is not specified, it will take the value of the Left argument.
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If Bottom is not specified, it will take the value of the Top argument.