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General

The MSRSYS DTD modelled up to now always represented one system including the associated control units or the associated control unit (e.g. an ABS system). Since a network generally links several systems (e.g. the engine control and the ABS control), it is necessary to describe networks in an SGML instance following the MSRNET DTD.
Figure 2: MSRSYS DTD and MSRNET DTD

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If a vehicle system is connected several network systems in parallel, then these shall be accordingly described in several instances of the MSRNET DTD. A clear distinction (engineering as well as organization) between the differing networks is attained by thisFOOTNOTE.