IVsDifferenceCodeWindow::Tooltip Property
Visual Studio 2015
Gets or sets the tooltip for the diff window's document tab.
Assembly: Microsoft.VisualStudio.Editor (in Microsoft.VisualStudio.Editor.dll)
If null or empty, the default tooltip is used.The caption is formatted (replacing {0} with the name of the left file and {1} with the name of the right file)
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