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Introduce PDF Forms preferences in Acrobat 9

Setting forms preferences can help you better control various aspects of your interaction with form fields. And here is some introduction to forms preferences in Acrobat 9.

First open the PDF form with Acrobat 8, then open the Preferences dialog box, choose Edit > Preferences (Windows) or Acrobat > Preferences (Mac OS), and then select Forms on the left. The forms preferences are organized in three sections: General, Highlight Color, and Auto-Complete.

Automatically Calculate Field Values
Automatically performs all field calculations upon user entry.
Show Focus Rectangle
Indicates which form field currently has the focus.
Keep Forms Data Temporarily Available On Disk
Retains forms data in the web browser if you briefly go to another web page and then click Back to return to the PDF form.

Show Text Field Overflow Indicator
Displays a plus sign (+) in text fields that exceed the bounds specified when the fields were created.
Always Hide Forms Document Message Bar
Hides the forms document message bar by default whenever a PDF form is opened in Adobe Reader.
Show Field Preview When Creating Or Editing Form Fields
Displays the appearance of a form field when you create or edit forms.
Manage Barcode Parameters

Opens a dialog box with a list of barcode items (including the Parameter Set Name, Symbology, and Built-in status for each item). Includes New, Edit, Delete, Import, and Export buttons for working with new or selected parameter sets.

Highlight Color
Show Border Hover Color For Fields
Displays a black outline around a form field when you place the pointer over it.

Fields Highlight Color
Opens a color picker for selecting the color of highlighted form fields. The highlight appears when the Highlight Fields button Highlight Fields Button on the document message bar is clicked.
Required Fields Highlight Color
Opens a color picker for selecting the border color of form fields that must be filled in. The border appears for required form fields only after you attempt to submit the form.

Auto-Complete menu
Displays three options for Auto-Complete: Off, Basic, or Advanced.
Remember Numerical Data
Suggests your previously entered numerical entries when you type the same first character into a similar field. When deselected, Auto-Complete offers suggestions only for text entries. (Available only when Basic or Advanced is selected.)

Edit Entry List
Displays current entries stored in the Auto-Complete memory. You can select and delete any entries that you don't want to keep for filling in future forms. (This option isn't available if no entries are in the memory.)

Note: The forms preferences apply to the way the application handles open forms as you work. The preferences aren’t saved with the PDF forms themselves.