Setting options for fields
You can set field options when you define a field, or at a later time. You can set options for:
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You can add, change, or remove data entry, validation, repeating, storage, and indexing options for all field types except summary.
FileMaker Pro doesn't update existing records if you change field options. You can find existing records and change the data, if needed.
Important  To avoid confusion when using dates in FileMaker Pro, set field validation options to make sure dates are always entered with four-digit years. For information on how FileMaker Pro handles dates with two-digit years, see Defining field validation and Conversion of dates with two-digit years.
Topics in this section
Defining automatic data entry
Defining field validation
Defining global fields (fields with global storage)
Defining repeating fields
Defining field indexing options
Defining Furigana options