What the mean of setting Opacity to 2 (greater than 1)?

[GF-Huang]

What's the point of being greater than 1?

HandyControl/src/Shared/HandyControl_Shared/Themes/Styles/Base/ExpanderBaseStyle.xaml

Lines 144 to 146 in 0762db0

	<Trigger Property="IsEnabled" Value="false">
	<Setter Property="Opacity" Value="2" />
	</Trigger>

[NaBian]

噢~这是明显的笔误

[GF-Huang]

我还以为会有什么神奇的用法。