NOT.5:4.5 - Repair the loss needed by the work

Choose the least burdensome repair that actually restores the operation. Retain the original expression when an occasional return is enough. Add the missing distinction to the target when the recipient must work independently. Otherwise, carry supplementary information with a defined recovery rule.

Call that supplementary information a complement when the target and the supplement together permit the required source recovery. State what it contains and how the return uses it. In :5.2 the position of a cue complements its count; in :5.3 a retained phase duration selects one backward update. A statement that the conversion is reversible cannot replace this construction.

Keep the target and its supplement associated with the same source. If the target is edited, check whether the old supplement still permits the intended reconstruction. A stored position can become invalid after deleting an event. Locate that conflict instead of returning an invented original.

The repair may instead be an explicit narrower use. A cue count remains useful for inventory even when it cannot recover order. Retain that useful result and identify the additional contribution needed by an order-sensitive question.