	Name	Description
	NDropDownButtonSchema	Schema associated with NDropDownButton.
	SpacingProperty	Reference to the Spacing property.
	SymbolBoxChild	Reference to the SymbolBox child.
	SymbolContentRelationProperty	Reference to the SymbolContentRelation property.

	Name	Description
	Spacing	Gets or sets the spacing between the symbol and the content.
	SymbolBox	Gets or sets the SymbolBox child.
	SymbolContentRelation	Gets or sets the symbol/content relation of this popup host.

	Name	Description
	ArrangeContent	Overridden. Overriden to layout the content.
	MeasureContent	Overridden. Overriden to measure the content.
	OnClick	Overridden. Called when the popup drop down has been clicked.