A session is started whenever CuBatch is started, a new set of data is imported, a session file is loaded or whenever is requested via the menu "Files -> New". A new session is also started if a model file is loaded.
A session file contains the following structures:
ModelIn,
ModelOut and the cell array
X.
It is created by means of the menu "Files -> Save Session" or by pressing the
save button on the main window toolbar.

An old session can be loaded using the menu "Files ->
Open" or the "Open" button on the toolbar.
If the proper structures are not present in the file an error message appears.
A session file contains only the structure
ModelOut defining the model.
A new model would cancel the current session (NB: no warning will appear!)
To save a Model use the menu: "Files -> Export -> Model to plant".
