public void setObject( Object o )
	{
		if( o instanceof GraphicFrame )
		{
			graphicFrame = (GraphicFrame) o;
		}
		else if( o instanceof Pic )
		{
			pic = (Pic) o;
		}
		else if( o instanceof Sp )
		{
			sp = (Sp) o;
		}
		else if( o instanceof CxnSp )
		{
			cxnSp = (CxnSp) o;
		}
		else if( o instanceof GrpSp )
		{
			grpSp = (GrpSp) o;
		}
	}