The Filter button appears on all search screens and is used to narrow (or filter) the initial search to find a specific record.
Note: Once the filter has been set for a field (column), the Filter button will appear blue to indicate a filter has been defined. If the blue Filter button appears in the button bar on a data entry screen, it indicates that the filter is set for the file when scrolling through the records (so only the filtered records appear when clicking the Next Record, Previous Record, First Record, and Last Record buttons); if desired, click the blue Filter button to remove the filter for scrolling in the file.