Using OS reference clients
OS reference clients are always used when all settings on several OS clients are identical. 
Each configured OS client can be used as a basis for further clients. Creation and maintenance 
efforts along with the project scope for operator stations are reduced considerably as a result.
In the example project, the stations "CLIENT03" and "CLIENT04" should be identical to station 
"CLIENT02". 
Creating and managing a PCS 7 project
5.5 Adding Additional Stations
Compendium Part A - Configuration Guidelines (V8.2)
Configuration Manual, 08/2016, A5E38166869-AA  69