1. This procedure starts the execution of a model on its Mosel instance: when the procedure returns, the model is not necessarily started (this may be delayed depending on the operating system load) and not necessarily terminated (the second model is executing concurrently to the caller).

2. When the execution of the model is completed (normal termination, interruption after calling XPRDstoprunmod, or runtime error) or could not be started, an event of class XPRD_EVENT_END is sent to the caller. The execution status is returned via the event value and it can also be obtained using XPRDgetstatus. The exit code related to the last execution may be retrieved using XPRDgetexitcode.

3. If the same model has to be executed several times concurrently, it must be loaded several times in different model objects.

4. The parameter parlist may be used to initialize the model parameters of the model/program ( e.g. "PAR1=12,PAR2='tutu'").