IExtensionSymbolicExtended Property

bool this[
	int index
] { get; set; }

Property SymbolicExtended ( 
	index As Integer
) As Boolean
	Get
	Set

property bool SymbolicExtended[int index] {
	bool get (int index);
	void set (int index, bool value);
}

abstract SymbolicExtended : bool with get, set

Property index must be 0 or 1 to indicate two ends, otherwise exceptions will be thrown. For beams, symbolic extension setting only works when the beam is extended, mitered, and miter locked at the end. Otherwise the setting is invalid