message: Document bounce marks
diff: @@ -159,6 +159,19 @@ export namespace Transposed {
  fields?: FieldMarks;
  }
  + /**
  + * Used to represent the transitory location where an insert or move-in was before it was affected by a concurrent
  + * slice-move.
  + *
  + * This is needed in order to determine the relative ordering of inserts and move-ins that were affected by the
  + * same concurrent slice move.
  + * Indeed their ordering ought to be the same as their ordering would have been the source location of the
  + * concurrent slice move.
  + * In order to determine their ordering at the source location, we have to know precisely where at the source
  + * location (and with what tiebreak policy) the inserts were made.
  + * Bounce marks capture that information.
  + * See ScenarioQ for an example.
  + */
  export interface Bounce extends HasOpId, HasPlaceFields {
  type: "Bounce";
  }
  