After choosing the option to edit an existing filter or create a new one, EndNote opens the Filter window.
All of the different options for editing a filter are listed on the left side of the Filter window. Click on an item to view the associated settings. You may switch between panels as needed while editing the file. No changes are saved in any of the panels until you select Save or Save As from the File menu.
If at any time you need to revert your changes back to the last saved copy of the filter, select Revert Filter from the File menu.
To close a Filter window, click the button in the upper rightleft corner of the window, or select Close Filter from the File menu. If you have not saved your changes to the filter, EndNote prompts you and gives you the option to save or discard any changes that you have made.