| Constant | Value |
| NOTHING | The initial value of an object reference variable. As soon as you assign a specific reference to the variable, the variable no longer contains NOTHING. You can explicitly assign the value NOTHING to an object reference variable. To test a variable for the NOTHING value, use the Is operator. |
| NULL | A special value that represents unknown or missing data. Various operations return a NULL value, but you can only assign the NULL value to a Variant variable. To determine if a variable contains the NULL value, use the IsNull function. |
| PI | The ratio of the circumference of a circle to its diameter. This constant can be assigned to any numeric variable, or used in numeric expressions. |
| TRUE and FALSE | The Boolean values True and False, which LotusScript evaluates as the integer values -1 and 0, respectively. These values are returned by all comparison and logical operations. In an If, Do, or While statement, which test for TRUE or FALSE, any nonzero value is considered True. |