The required n attribute is the number of coordinate systems in the list.
Source
<xs:element name="CoordinateSystemDefinitions" type="CoordinateSystemListType"><xs:annotation><xs:documentation>The CoordinateSystemDefinitions element is a list coordinate system definitions.</xs:documentation></xs:annotation></xs:element>
The optional asmPathId attribute is a reference used for locating the id of an assembly path. If the asmPathXId attribute is not used, the asmPathId is a reference to an assembly path in the AsmPaths of the local document. If the asmPathXId is used, the asmPathId is the local id of an external QIF document, and the asmPathXId is a reference to an assembly path in the external QIF document. The assembly path (instantiation chain) unambiguously identifies a model entity within an assembly.
The optional asmPathXId attribute, if used, is a reference to the id of an assembly path in the external document identified by the asmPathId. The asmPathXId must not be used if the asmPathId is not used.
The optional xId attribute is a reference to the id of a QIF object in an external document. A QIF object in an external QIF document can be referenced by using references to two QIF ids: the id of the external document reference of type ExternalQIFDocumentReferenceType found in the local document and the id of the object found in the external document.
Source
<xs:element name="CommonCoordinateSystemId" type="QIFReferenceFullType" minOccurs="0"><xs:annotation><xs:documentation>The optional CommonCoordinateSystemId element is the QIF id of the coordinate system which corresponds to the common coordinate system.</xs:documentation></xs:annotation></xs:element>
Each optional MachineCoordinateSystem element is the QIF id of a coordinate system which corresponds to the machine coordinate system of a particular measurement device.
<xs:element name="MachineCoordinateSystem" type="MachineCoordinateSystemType" minOccurs="0" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each optional MachineCoordinateSystem element is the QIF id of a coordinate system which corresponds to the machine coordinate system of a particular measurement device.</xs:documentation></xs:annotation></xs:element>
The CoordinateSystemsType defines a collection of coordinate systems and optionally identifies which is the common coordinate system and which are machine coordinate systems.
<xs:complexType name="CoordinateSystemsType"><xs:annotation><xs:documentation>The CoordinateSystemsType defines a collection of coordinate systems and optionally identifies which is the common coordinate system and which are machine coordinate systems.</xs:documentation></xs:annotation><xs:sequence><xs:element name="CoordinateSystemDefinitions" type="CoordinateSystemListType"><xs:annotation><xs:documentation>The CoordinateSystemDefinitions element is a list coordinate system definitions.</xs:documentation></xs:annotation></xs:element><xs:element name="CommonCoordinateSystemId" type="QIFReferenceFullType" minOccurs="0"><xs:annotation><xs:documentation>The optional CommonCoordinateSystemId element is the QIF id of the coordinate system which corresponds to the common coordinate system.</xs:documentation></xs:annotation></xs:element><xs:element name="MachineCoordinateSystem" type="MachineCoordinateSystemType" minOccurs="0" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each optional MachineCoordinateSystem element is the QIF id of a coordinate system which corresponds to the machine coordinate system of a particular measurement device.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:complexType>