Normally quick answer contains links to the references. Occasionally they are called "Datums" with unclickable links. Happens randomly, cannot reproduce with the same query. but an example:
Quick Answer
Based on the available information, it seems there are a few approaches to handling events on entities in Bevy without the overhead of storing the full Entity struct:
Use an Option<Entity> instead of Entity: As mentioned in Datum 2, the Bevy team is considering allowing the use of Option<Entity> to leverage memory layout optimization and reduce the storage overhead.
Store events as components on entities: The idea of "event-entities" discussed in Datum 4 and Datum 5 suggests storing events as components on specific entities, rather than as a separate Events<T> resource. This allows reusing the existing ECS machinery and avoiding the frame delay associated with the Events<T> resource.
The Datums are hyperlinks to "klzzwxh:0027%031%02klzzwxh:0028", "klzzwxh:0013%032%02klzzwxh:0014" etc.
Footnotes should link to the reference url.