ITextSelection::IsReversed Property
Visual Studio 2015
Determines whether the active point is Span.Start and the anchor point is Span.End.
Assembly: Microsoft.VisualStudio.Text.UI (in Microsoft.VisualStudio.Text.UI.dll)
In a reversed selection, the active point is Span.Start and the anchor point is Span.End. In a non-reversed selection, the active point is span.end and the anchor point is Span.Start.
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