This is a RowStatus-style control column, now marked obsolete in the source, that was used to create or remove a secret entry, per the source description listing active(1), createAndGo(4), and destroy(6) as the supported values. Since it's obsolete, an administrator managing modern ZXR10 devices would not typically interact with this object directly, as the secret table's row management has presumably shifted to a different mechanism. For example, older management software might still set this to destroy(6) to remove an obsolete privilege-level secret entry, but current tooling would not rely on it.