The optional label attribute is the model entity "nameplate". Normally it can be seen at the entity item in the project tree.
Source
<xs:element name="SimplifiedRepresentation" type="SimplifiedRepresentationType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each SimplifiedRepresentation element defines a simplified representation.</xs:documentation></xs:annotation></xs:element>
The required n attribute is the number of simplified representations in this set.
Source
<xs:complexType name="SimplifiedRepresentationSetType"><xs:annotation><xs:documentation>The SimplifiedRepresentationSetType defines a collection of simplified representations.</xs:documentation></xs:annotation><xs:sequence><xs:element name="SimplifiedRepresentation" type="SimplifiedRepresentationType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each SimplifiedRepresentation element defines a simplified representation.</xs:documentation></xs:annotation></xs:element></xs:sequence><xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of simplified representations in this set.</xs:documentation></xs:annotation></xs:attribute></xs:complexType>
<xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of simplified representations in this set.</xs:documentation></xs:annotation></xs:attribute>