MSR started in the domain of entire systems. The result is the MSRSYS.DTD which is used to describe and to specify entire control systems with all its mechanical and electrical components. This DTD provides detailed structures for:
 
project data
 
parts and system decomposition
 
architectures with signal, interfaces, ports and connection specification
 
connections
 
electrical characteristics
 
mechanical characteristics
 
optical and acoustical characteristics
 
environmental characteristics
This DTD was successfully used in multiple projects within a big automotive manufacturer and his suppliers.