defaultNone

`defaultNone` is a programming pattern used to handle situations where a value might not be provided. Instead of leaving a variable undefined or risking errors, `defaultNone` assigns it the value `None` when no specific value is given. This allows programs to recognize the absence of a value and handle it appropriately, such as by setting defaults or prompting for input, without causing errors or unexpected behavior. Essentially, it ensures that a variable always has a predictable state, either holding a meaningful value or explicitly indicating "nothing here."