1. If you would like to build on an existing query without having to re-type the search parameters or change the existing query, select the existing query using the drop down menu.
2. Negate: Press this button if you want to make the criteria you have selected NOT true. The Negate button is available on all criteria screens. To undo, simply click the "Undo Negation" button.
If you have additional questions that are not answered here, please contact the WHI help desk.