The fields.ini file supports a __global__ section that applies to all fields in the current table. This is particularly useful for setting up default functionality that you wish to see on all fields except a few. For example you may wish to have all fields hidden from list view by default, and only explicitly enable a few. Same for CSV export or the details form.
Example 1: Hiding All Fields from List View
In the fields.ini file:
;; hide all of the fields from list view
;; show the first name in list view
In the above example we used the __global__ section to declare that we want all fields to be hidden from list view by default. Then we explicitly showed first_name and last_name in list view. In this case only first_name and last_name will appear in the list view.