The setup_and_radar_selection module handles the housekeeping of starting the radar exhibit.

It will use the radar_management_structure, which is in global data, will be used by this
module to manage what radars are available and which one is selected.

The selection of which radars are to be available to the museum visitors is accomplished
my entering the radars that will be available as parameters of the command for example:

radar_simulator chain_home marine_ascope marine_traffic police_boat  - all radars
radar_simulator marine_ascope  -  only the marine ascope radar

Note: if the operator invokes no parameters, then all the radars are to be made available.

When the application is started, it will be in a state where no radar is in use. The visitor
will use the selector to select a radar to operate.

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