Main administration page || New scenario || View and delete scenarios
Create a scenario for an instrument, or create a scenario list.
What are scenario files?
This utility is used to create instrument specific scenario files.
When a new session is created from this instrument, all of the instrument specific scenario files that have been created (for the instrument) will be available for this new session.

#### Why scenario files?

Basically, scenario files are variations of the general parameters file. When a session is started, you can use the parameter values specified in a scenario file to specify a treatment of your instrument.

The idea is to create several scenario files before your session starts, where each scenario specificies a different treatment. Then, during the session when you want to switch treatments, one simply chooses a new scenario file (using the scenario option in the scenario's control panel).
This can be much easier then changing specific parameters in the general parameters file.

#### Notes:

- You can also create scenario lists. Scenario lists are simply lists of scenarios, and the number of rounds this scenario should be active for. Scenario lists can be used to set up a sequence of treatments beforehand (say, by using the `<checkScenarioList>` task in a control panel file).
- Newly created instrument specific scenario files are not applied to already existing sessions. That is, no attempt is made to add a newly created instrument specific scenario file to any session that already exists.

  In particular: | an existing session created from this instrument will not be able to access the scenario you are about to create.

- However, you can create session specific scenario files, which can be modifications of an instrument specific scenario file, by using the scenario option in a session's control panel (look for this option at the top of the control panel screen).

Choose one of the available instruments: |

Currently selected instrument:

Create a .. |
or a new scenario .. | Enter scenario name (a single word): Note: a scenario using this name will be created, and this scenario will be available to all future sessions created from this instrument. Enter a description for this scenario Click here to create the not yet specified scenario

(scenario parameters will be displayed here)

Description of instrument...

Details...