In this column the field name for the view is defined as it will be expressed in the software (a field with the name FIELDNAME defined in an ABV abbreviation view can be accessed using the syntax [F:ABV]FIELDNAME ).
For custom/specific fields, the field name must start with X_, Y_ or Z_.
For a dimensioned field (FIELDNAME_0, FIELDNAME_1, FIELDNAME_2…), only a single field FIELDNAME is defined.