Redaction and hidden-content removal cleared /Alt, /ActualText and /E from
the structure element owning removed marked content, but kept its /T title,
which producers often fill with the element's text. Ancestor cleanup and
in-place description detection shared a constant that also omitted /T, while
annotation removal had its own list that included it.
One DESCRIPTIONS policy (Alt, ActualText, T, E) now serves the owning
element, its ancestors, in-place detection and annotation removal.
Dylan M. Taylor
359ed56ffa