Adobe Acrobat 7 Professional - Manual (Page 208)

Validation options
Use validation properties to restrict entries to specified ranges, values, or characters. This
ensures that users enter the appropriate data for a specified form field. You can also use
custom JavaScripts to define other types of validation, such as allowing only alphabetic
entries in a form field. To access the Acrobat JavaScript Scripting Reference, go to http://
partners.adobe.com/links/acrobat (English only) on the Adobe website.
You can select from the following validation options:
●
To turn off validation, select Field Value Is Not Validated.
●
To specify a numeric range for form fields using number or percentage formats, select
Field Value Is In Range.
●
To run a JavaScript for custom validation, select Run Custom Validation Script.