explain status codes for 'fail' and 'redirect' functions in documentation

[bobbymannino]

Describe the problem

you have set typed status codes for both but I cannot figure out what they mean or why they are what they are, explaining in docs would be useful

Describe the proposed solution

see above

Alternatives considered

No response

Importance

would make my life easier

Additional Information

No response

[Conduitry]

Maybe we could have a link to https://developer.mozilla.org/en-US/docs/Web/HTTP/Status somewhere, but I don't think we ought to be doing more than that. These status codes have been around a very long time and are very well-documented online.