SDM (ref<IlsRpSDMModel>): indicates the parent model to which the element belongs. When the element representation object is created by the server as an instance of a derived class, it is first empty. Then, you fill in the missing values by setting attribute values. The first attribute to be set is the SDM attribute to allow the element to add itself to its parent model (see mandatory keyword in the .ils file).

tag (string): defines the logical type of an SDM element.

ID (string): defines the unique identifier in the SDM model. This attribute is optional in the server model.

parent (ref<IlsSDMElelent>): references the parent element of this element, it can be an instance of IlsRpSDMElement or of one of the subclasses IlsRpSDMNode or IlsRpSDMLink.