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FilledRegionType.IsMasking

Property
Description:
If true then the FilledRegion will cover the lines and edges of objects behind it. If false then lines and edges will remain visible.
Syntax
public bool IsMasking { get; set; }
Exceptions
Exception Condition
ArgumentException When setting this property: In a family a FilledRegionType with a solid fill pattern isMasking must always be true.