Follow these instructions to specify a search criterion in find and replace operations and in search filters.
 button next to the drop-down to display a pop-up menu of elements you can insert in the pattern. Click an element to insert
                        it. The matching pattern is saved when you execute the search.
 button next to the drop-down to display a pop-up menu of elements you can insert in the pattern. Click an element to insert
                        it. The matching pattern is saved when you execute the search.