Use this tab to define the pattern for the syntax of user input (date, time, numerical, and textual data). The edit pattern must be compatible with the option selected in the Data Format list on the Data tab. For example, if the data format is set to Date, the pattern must represent a date value. If the user’s input does not conform to the Edit Pattern, the data is rejected and the field value is not formatted.
To display this dialog box, select the object you want to create a pattern for and, in the Object palette, click the Field tab, click Patterns, and click the Edit tab. The options on this tab are the same as the options on the Display tab. For information about the options available, see Display (Patterns dialog box).
See also 

Edit (Patterns dialog box)