Newbie Question: Refreshing/Clearing Form Content Criteria

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Access 2003 ADP(Access 2000 File Format), SQL Server 2000 backend

I have created a simple form, using the standard functionality in Access.

When using the following standard toolbar buttons

Filter by Form

I enter SMITH into the last_name field

Apply Filter

Get my results

Remove Filter/Sort

However, when I click on Filter by Form to do another filter, the previous criteria LAST_NAME = SMITH still exists.

Is there a way to clear these criteria from the form filter fields when the Remove Filter/Sort button is clicked on or when the Filter/Form button is selected again.

Thanks.