I haven't looked at the schema but it might do better when limiting you to certain choices. For example, there might be a frequency option whose value can be e

I haven't looked at the schema but it might do better when limiting you to certain choices. For example, there might be a frequency option whose value can be either annual or monthly. If this was communicated correctly in a man page then it's still possible for someone to typo that as monttly. They'd pick it up if the error reporting is good, but having the options in a tui should prevent such issues.