Booleans

Describes the Boolean data type

A boolean value is a truth value, also known as a logical value, which can be either true or false. Boolean values are used with logical operators, usually in connection with program flow control using conditional statements.

In PBL the boolean data type is Bool, and is declared as follows:
<variable_name> as Bool
For example, the code below will display "Approved!":
isApproved as Bool

isApproved = true

if isApproved then
    display "Approved!"
else
    display "Rejected"
end