Path: Admin > Text Management
The Text Management window includes the following instruction "To set empty word, use {empty}." This procedure applies to very specific uses. It is not needed for most fields, e.g., if you hide a field, the label is also hidden.
Fields that show tax rates are the only application for {empty} because the label itself includes fixed text as well as a variable that displays the selected tax rate. When no tax rate is selected and {empty} is not used, the field displays the fixed text alone.
If you use tax rates, you may want to remove the fixed text and display the tax rate only. If so, follow the instructions in How to Change Labels in WebTMA and insert {empty} in the Updated Text field.