The notation is divided into two parts. The simple notation only provides a simplified view on the data hiding some details like Attributes. The extended notation allows exposing all structure information of OPC UA, including Attribute values. The simple and the extended notation can be combined to expose OPC UA data in one figure.
Common to both notations is that neither any colour nor the thickness or style of lines is relevant for the notation. Those effects can be used to highlight certain aspects of a figure.