XML Serialization Annotation This rule has the following XML serialization annotation: [ localname = "Frame" children = ( object.1 slot*3 ) ] This means that a Frame derived through this rule will be serialized thus: <Frame> <object> XML serialization of the 1st RHS symbol (Term) </object> <slot*> XML serialization of the 3rd RHS symbol (FrameAttributes_opt) </slot*> </Frame> N.B.: an XML construct such as <slot*>...</slot*> stands for either zero, one, or many occurrences of <slot>...</slot>. distributed over the element's contents (the "..."), which, accordingly, may be either empty, a single XML element, or a list thereof.