When you select In or Not In as an operator, a value list is displayed. To add a value to the list, specify the value, then click on the Add button or press the Return key. To remove a value from the list, select the value in the list, then click on the Remove button. Figure 3-6 shows the value list. When you use a single condition element, you are limited to simple comparisons.
Logical elements allow two elements to be combined for more complex comparisons.
Select an existing element, for example a condition. Click on either the Leading Logical or Trailing Logical button. Select the boolean operator. Click on the Condition button to add another condition branch. Table 3-1 shows what happens when you select either a conditional or logical element and then click on one of the logical buttons.