The True Environment Object (.true)

The environment object .true simply allows for retrieving the value 1 stored in the environment directory .environment, which is the value used in Rexx to represent the boolean value "true" ("not false"). You can use the environment symbol .true instead of the literal 1 to make clear that you are using a boolean value (and not a number or a string).

All the environment objects Rexx provides are single symbols. Use compound symbols when you create your own, to avoid conflicts with future Rexx-defined entries.