Data type Logical Foundation
There are only two values for the "logical" data type: true and false. Literal logical values are defined in program code using the characters .t., .T., .y., .Y. for the value true and .f., .F., .n., .N. for the value false.
Feedback
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.