How simple or complicated the control flow of the application is.
Issues in this domain mark code that will be more difficult to update competently than it should
Effort to fix all maintainability issues. The measure is stored in minutes. An 8-hour day is assumed when values are shown in days. (The value of the cost to develop a line of code is 0.06 days)
Issues in this domain mark code where you will get behavior other than what was expected.