The Search field is a type-ahead field that allows you to narrow the list of compatible units (CUs), favorites, or templates. As you type, the list filters to display only the items that fit the criteria you are entering. The text entered will match any portion of the text in the name, code, or description (beginning, middle, end). You can use this field in tandem with any of the filters.
To clear the Search field, either delete the entry or click the X at the right end of the field.