Artifact cc9f45e883946de3aae6b5595318161f7aeee751:

• File doc/parts/fail_description.inc — part of check-in [d24c736d84] at 2016-06-22 19:54:00 on branch trunk — Documented the new fail-* convenience commands for validation types. (user: aku size: 165)

When invoked this command throws an error indicating a validation type
failure. The arguments provide the information used to construct both
error message and code.