- STRUCTURE
- SYNOPSIS
Theorem-tactical which always fails.
- DESCRIPTION
When applied to a theorem-tactic and a theorem, the theorem-tactical
NO_THEN always fails with string `NO_THEN`.
- FAILURE
Always fails when applied to a theorem-tactic and a theorem (note that it
never gets as far as being applied to a goal!)
- USES
Writing compound tactics or tacticals.
- SEEALSO