'Declaration Public Property HeaderMargin As System.Nullable(Of Single)
public System.Nullable<float> HeaderMargin {get; set;}
When set explicitly, the unit of measurement used to express the property value is defined by the Unit property.
In the absence of an explicit setting, this property resolves to .5".
Target Platforms: Windows 8.1, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
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