This is a coherent, reasonable, set of codes that can be adapted for a variety of situations. However, there are multiple situations where one might want to hav

This is a coherent, reasonable, set of codes that can be adapted for a variety of situations. However, there are multiple situations where one might want to have more meaningful specialization of error codes. In such cases, for the love of all that is holy, please document the codes and do not change the meaning of codes from one version of the utility to the next.