The ITP/Server services for the preparation of model runs or model lists are described below. Apart from ITPOLSSessionStart, these services should be run in the context of an existing session. This can be done by passing the identifier of this session on the call to the service. Details on how to do this depend on the specific API used to call the service. Refer to the documentation on the APIs in chapter Integrating of the ITP/Server Manual for more information. For more information on the role of sessions in ITP/Server scripts, refer to the ITP/Server Script Manual, chapter Using ITP/Server sessions.