A.16.2:17 - What each retreat preserves and withdraws
A.16.2:17.1 - Reopen
reopen usually preserves the family and much of the surrounding structure while withdrawing closure. It reintroduces rival possibilities without claiming that the entire earlier publication was inadmissible.
A.16.2:17.2 - Sketch-backoff
sketchBackoff more sharply withdraws closure, a route selection, or a passed endpoint test and its stronger-use disposition. It typically preserves witnesses, exemplars, or cue anchors while withdrawing the over-committing publication form. An actual authority relation changes only through its own predicate and act, not merely because the form changed.
A.16.2:17.3 - Respecify
respecify keeps the broad family but changes framing scaffold, route specification, or facet-profile reading. It is neither pure retreat nor silent edit: it preserves enough of the prior publication to justify continuity, but it does not authorize semantic slot repair that belongs to governing patterns.
A.16.2:17.4 - Retire
retire ends current use of the exact cue, episteme, route-bearing publication, or branch while preserving historical continuity. It may point to a better-supported successor or explicitly state that no successor currently exists. Publication availability and any actual authority relation remain separate claims.