New Scenario (build from base scenario) - allows you to create a new scenario name (for saving simulation results) and will base your model setup on the existing (base) scenario. Constants and Lookup Tables will be the same as the base scenario, unless you change them in the Simulation Setup screen. Simulation results are saved with the file extension .vdf.
New Scenario (build from changes (.cin) file) - allows you to create a new scenario name (for saving simulation results) and will base your model setup on a changes file. Constants and Lookup Tables will be defined by the changes file and the existing model, unless you change them in the Simulation Setup screen.
Build from an existing scenario - allows you to create a new scenario name (for saving simulation results) and will base your model setup on an existing scenario. Constants and Lookup Tables will be the same as the existing scenario, unless you change them in the Simulation Setup screen.
Modify and rerun an existing scenario - allows you to modify an existing scenario and will overwrite the existing simulation results for that scenario. Constants and Lookup Tables will be the same as the existing scenario, unless you change them in the Simulation Setup screen.