s.html">Size</a> returns the <a href="dart-ui/Size-class.html">Size</a> that is smaller than
the <a href="dart-ui/Size-class.html">Size</a> operand by the difference given by the <a href="dart-ui/Offset-class.html">Offset</a> operand. In other
words, the returned <a href="dart-ui/Size-class.html">Size</a> has a <a href="dart-ui/Size/width.html">width</a> consisting of the <a href="dart-ui/Size/width.html">width</a> of the
left-hand-side operand minus the <a href="dart-ui/Offset/dx.html">Offset.dx</a> dimens